Do you know a simple method for diagnosing stroke?

    We can easily spot warning signs of a heart attack. But can we do the same with a stroke?
    That's much more difficult. In fact, so difficult that stroke patients often don't even realize they've had a stroke. Research shows that in many cases, stroke patients don't realize they have it immediately, often only seeking medical help after the critical period for treatment has passed. For example, minor strokes are often mistaken for migraines or weakness and ignored.
    So when a report claims that anyone can diagnose a stroke in three simple steps, the allure is obvious. Why not? Millions of Americans attend CPR classes each year to be able to help in emergencies, so learning to diagnose stroke quickly and effectively might come in handy.
    Furthermore, the report opens compellingly with the story of Susie, a stroke survivor. Susie survived a potentially fatal stroke thanks to her best friend Sally, who had previously learned the amazing three-step stroke check and knew how to perform it when appropriate.
    This report states that Sally knew how to get Susie to do three simple things: smile, slowly raise both arms, and recite a simple sentence. If the patient couldn't complete any of these, she had to be taken to the hospital immediately. If she could, everything was fine.
    Most similar reports claim to cite a research report or doctor. Susie's story specifically states that the test comes from a small study presented at the 2003 American Stroke Association meeting.
    But that study is the debunking of the myth.
    Stroke symptoms can vary greatly, meaning the three-step test will identify some patients while missing many others. Dr. Larry Goldstein, director of a stroke center and one of the critics of the test, points out that some of the most common stroke symptoms are visual problems, unusual headaches, sudden paralysis, and difficulty coordinating or walking—all of which the three-step test excludes. Asking someone to perform the three-step test to determine if they have had a stroke is like asking someone to read a bulletin board to determine if their eyesight is poor. Even if you pass the tests, it doesn't mean you're in good health. "The danger is that a sudden change in someone's neurological function might be overlooked because it's not one of the three things tested," Goldstein warns.
    This is why the American Stroke Association has rejected this testing method. If you suspect someone has had a stroke, calling emergency services immediately and seeking medical attention promptly is the only potentially helpful course of action, not the so-called three-step testing method.

Does drinking milk cause phlegm?

    Regarding this question, it's possible my brother was joking with me. When he was about six, he instilled in me a deep skepticism about milk—even though it was supposed to cure the white spots on my nails. He warned me that drinking milk would cause me to produce more mucus, and that drinking too much might cause me to choke on my own phlegm.
    Actually, the latter part of his statement was wrong.
    But what about the first part? Most people are taught from childhood that drinking milk produces too much mucus and should therefore be avoided when you have a cold, especially if you have asthma. In fact, the idea that milk accelerates mucus production appears in the writings of the 12th-century Jewish philosopher and physician Moses Maimonides, who wrote about it in his bestselling book, *On Asthma*. (Maimonides was quite visionary. Also in this book, he advocates for a quick home remedy for the cold, one you may have already heard of: chicken soup. We'll discuss that in the next section.)
    To unravel this myth, in a persistent and somewhat peculiar investigation, a group of courageous Australian researchers conducted a study weighing the nasal secretions of many volunteers. The scientists followed these subjects for 10 days, recording the amount of milk they drank and the amount of mucus they produced. The results showed no correlation between milk intake, nasal secretions, and congestion.
    But like any question of great importance to scientists, it couldn't be solved by a single study. Another group decided to compare mucus production in different groups who drank a glass of milk or a non-dairy placebo that tasted like milk. In each case, there was no difference in mucus production. Other studies investigating whether asthma or cold sufferers produced more mucus after drinking a glass of milk also found no difference.
    Dr. Alan J. Doroth, an experienced asthma researcher and pediatrician who has frequent encounters with various sticky secretions in his work, states unequivocally that the above view is incorrect. For the very small percentage of Americans who are allergic to the proteins in milk, there is a tiny possibility that drinking milk might increase mucus production. However, for most of us, milk does not have this effect, and therefore there is no need to reduce consumption during a cold or illness—unless, of course, you are drinking milk in the form of a "mudslide" or "White Russian" cocktail.

Does chicken soup really help with a cold?

    Ever since Maimonides proclaimed chicken soup a delicious soup that was "very good for you, but terrible for the chicks," mothers have been making hot chicken soup for their runny-nosed children. But if Maimonides' views on milk and mucus were wrong, how has the chicken soup remedy persisted 800 years later?
    Scientists have been working tirelessly to prove its validity ever since the idea emerged and gained widespread acceptance. In their quest for truth, microscope-wielding scientists have studied various brands of soup, analyzed countless additives, observed their effects on volunteers, and even attempted to devise a perfect cold-fighting chicken soup recipe. So far, they have all reached the same conclusion: chicken soup is effective.
    This investigation began in 1978 when scientists at Mount Sinai Medical Center in Miami Beach published a study finding that drinking chicken soup was more effective than drinking hot or cold water in relieving congestion and stuffiness in cold sufferers. They discovered this after first noticing that a telltale symptom of the cold—a runny nose—was caused not by the cold virus itself, but by the immune system. A runny nose is the body's way of clearing out invaders; it's our first line of defense. Therefore, scientists concluded that by measuring the "rate of nasal mucus secretion," they could determine the effectiveness of different treatments: the faster the mucus secretion (i.e., pathogen clearance), the more effective the treatment.
    Scientists found that volunteers who drank hot water experienced a greater increase in mucus secretion than those who drank cold water, while those who drank chicken soup showed the highest increase among all volunteers. Years later, further evidence emerged: other scientists discovered that chicken protein contains an amino acid called "cysteine." The chemical structure of cysteine ​​is actually similar to acetylcysteine, a drug that dissolves mucus in the lungs, making it easier to cough up.
    But not all chicken soup is created equal. Undoubtedly, mothers will always make the best chicken soup for their children. However, most of us today are forced to rely on our local markets and corner deli, rather than our mothers, to provide us with the chicken soup we need to cure our runny noses, sneezes, and sore throats. Sometimes you don't even know what you're buying.
    This is why a group of scientists set out in 2000 not only to prove that chicken soup could alleviate cold symptoms (copycatting is supposedly the source of good science) but also to pinpoint which brands of chicken soup were most effective among various options. If that weren't a bit comical for such a serious scientific endeavor, the scientists also provided a detailed recipe for the chicken soup they used, the results of which were published in the prestigious journal *Chest*.
    In this study, they tested 19 samples of this particular chicken soup recipe and found in laboratory tests that it suppressed inflammatory white blood cells (neutrophils) that cause hoarseness, congestion, discomfort, and other cold symptoms. Even better, it remained effective even after significant dilution.
    "This study," the scientists wrote, "suggests that chicken soup may contain many substances with beneficial medicinal activity. A weak anti-inflammatory effect may be one of the mechanisms by which chicken soup relieves upper respiratory tract infections."
    They also tested about 12 other soups purchased from other stores. All but one showed anti-cold effects. Many brands of chicken soup were effective.
    But more importantly, they provided this proven family recipe (one tested in the study), from Celia Fleischer, the grandmother of one of the researchers on the team.
    This gives you the first scientifically reviewed chicken soup recipe. It took approximately 1000 years of scientific speculation and experimentation to develop. Enjoy it when you have a cold.
    1 2.5-3 kg stewed or roasted hen,
    1 pack of chicken wings ,
    3 large onions, 1 large sweet potato,
    3 parsnip,     2 turnips
    , 11-12     large carrots,     5-6 celery stalks,     1 bunch of parsley     , salt and pepper to taste     . Place the chicken in a large pot of cold water and bring to a boil. Add the chicken wings, onions, sweet potato, parsnip, turnips, and carrots. Boil for about 90 minutes, skimming off any surface fat. Add the celery and parsley and continue cooking the mixture for about 45 minutes. Remove the chicken (it makes excellent chicken cheesy); it's no longer needed in the soup. Place the vegetables in a food processor until finely chopped or strain. Add salt and pepper to taste.     This will make it palatable for children with runny noses.

The culprit behind hair loss

    Chapter 8: Are These Big and Small Bad Habits the Straw That Breaks the camel's Back?
    The Culprit Behind Hair Loss
    At first, you might only occasionally find a few strands of hair in the drain while showering; gradually, you find yourself constantly looking down to check for fallen hair. Then, you start wearing hats to keep your hair away from the "mess," but unfortunately, the amount of hair on the floor only increases, leaving you feeling helpless.
    For some, realizing that their hair is slowly falling out is as shocking as a heart attack. For some, one thing can lead to another. But for most of us, hair loss, like a stroke, is preventable. Many people don't mind the huge sums of money spent at hair salons or on high-end hair products; however, few stop to consider that certain hairstyles might cost them a lot more money.
    Tightly pulled ponytails, American-style braids, knotted braids, twisted braids, and other hairstyles, along with various hats and headbands embroidered with team logos, can all pull on your scalp for a period of time, leading to irreversible hair loss. Doctors call this condition traction alopecia. Have you ever noticed Andrew Agassi wearing hats all the time and then going bald early? Is it a coincidence? But it's certain that hats at least didn't help prevent hair loss.
    There are no precise figures on how many people suffer from hair loss due to the pursuit of hairstyles and hair accessories. However, we know that women and children are particularly affected. It's also especially common among East Indians and African Americans, who often use chemicals to straighten curls or braid hair. A few years ago, this type of hair loss was frequently observed among nurses because they often used hairpins to fasten their hats for hours at a time. A study published in the *International Journal of Dermatology* observed that some nurses experienced hair loss precisely in the areas where they frequently used hairpins.
    Traction alopecia is caused by excessive traction on the scalp. The first signs are inflammation, thickening, and scaling of the hair follicles; some patients also develop small pustules. Over time, you'll find many damaged areas on your scalp. Your hair becomes weaker, stops growing, and becomes thinner and shorter, especially where you braid your hair or where you apply pressure to your scalp.
    If you ignore this problem for a long time, it can gradually develop into baldness. However, if detected early, it can be reversed; or limiting the use of tight curling irons, chemical straightening treatments, and relieving tension on the scalp can also prevent baldness.

Crossing your legs can lead to varicose veins and a tight-fitting body? (1)

    Despite widespread folklore, few things truly ignite a nationwide movement. In the late 1990s, a nutritional supplement company launched "No Leg Crossing Day," urging women to refrain from crossing their legs for a day, based on the theory that this behavior hinders blood circulation in the legs, causing varicose veins. As part of the campaign, on a sunny spring afternoon, dozens of dancers from the Flash Dance Company performed at Columbus Roundabout in New York, deliberately making various comical leg-crossing gestures during their tap dance to attract attention.
    Of course, it was more of a publicity stunt. While the entire plan was meticulously crafted, it overlooked a small detail: More than 12 large studies have analyzed risk factors for varicose veins, but unfortunately, none have confirmed that crossing one's legs is among them.
    Some women who have always considered "no crossing your legs at the table" as gospel might be quite shocked by these research findings. Is crossing your legs impolite? Certainly. But calling it a bad habit is another matter entirely. Perhaps for the same reason, nurses who frequently wear soft-soled shoes and women who wear high heels for extended periods are also advised to take off their shoes every one to two hours and move their toes to relieve pressure on their calves and back.
    Among people over 50, approximately half of women and 15% of men develop varicose veins, which appear as winding, barely visible blue veins on the calves. Women who frequently wear high heels have a higher risk of developing this condition, but women who like to cross their legs seem to be relatively safe.
    A 1988 study of 3,822 adults in the United States found that for men, the most significant risk factors for varicose veins were smoking and lack of exercise; for women, lack of exercise, high blood pressure, and obesity had the most pronounced effects.
    Similarly, standing or sitting for more than eight hours a day also increases the risk of varicose veins. This finding comes from a European study in which volunteers performed jobs that required them to stand frequently, such as nurses. Other studies have also found that pregnancy and frequently wearing high heels are important contributing factors.
    However, if you want to determine whether you will develop varicose veins in the future, the simplest and most direct way is probably to look at your family history—more than 80% of varicose vein patients have one or more parents who also suffer from varicose veins.

Crossing your legs can lead to varicose veins and a tight-fitting body? (2)

    What can damage our eyesight?
    Have you ever had this experience? Late at night, you're engrossed in a book, flashlight in hand, when suddenly you hear warnings: "Don't read in the dark, it will ruin your eyes and your vision."
    While reading in the dark can indeed cause eye strain and headaches, it doesn't lead to lasting damage. Many people experience a decline in vision as they age; however, genetic research shows that family history is the most crucial factor in determining how bad vision ultimately becomes.
    Nevertheless, some researchers believe that poor eye habits during childhood or adolescence, such as reading in the dark or for extended periods, can have serious long-term consequences, leading to poor vision in later life.
    Demographic studies in the United States and other countries show that higher levels of education, and professions requiring extensive reading such as lawyers, editors, and doctors, result in a higher prevalence of myopia, and more severe cases.
    Such examples are commonplace around us. Think about it, how many lawyers do you encounter who don't wear glasses?
    However, one problem with this claim is that most studies supporting this theory haven't considered differences in social status and economics. This is understandable; people with lower levels of education are unlikely to see ophthalmologists as often. Therefore, even if they have eye problems, they are probably overlooked most of the time.
    Most ophthalmologists, such as Dr. Robert Sachett of NYU Medical Center, maintain that prolonged reading is safe regardless of lighting conditions. "You might feel tired," he explains, "but it won't damage your eyes."
    Regarding vision problems, you may have heard another claim: "Wearing glasses can damage your eyes." Undoubtedly, glasses can make a blurry world clear. However, it's commonly believed that prolonged overuse can accelerate the natural decline in vision.
    Another misconception! A person's vision is largely determined by the eyes themselves; simply wearing glasses or reading in the dark is unlikely to change the overall picture. For a normal eye, the distance between the lens and the cornea/retina is approximately 24 millimeters. When the lens's accommodation function malfunctions, the cornea cannot effectively focus on the retina, requiring the assistance of glasses.
    After wearing glasses for a long time, you might be able to appreciate the difference between "blurry" and "clear" vision when you take them off. However, glasses do not actually damage your eyesight.

Does hypnosis help with quitting smoking?

    Quitting smoking is definitely a seemingly easy but actually very difficult thing. Mark Twain knew this all too well. He said, "I've tried hundreds and thousands of times."
    In fact, everyone who has tried to quit smoking knows how difficult it is. Nicotine is one of the world's most notorious addictive substances, along with alcohol, opium, and cocaine. More than three-quarters of people who try to quit smoking relapse several times.
    Hypnosis, and many other techniques, may be as effective, so it probably won't be very effective either.
    Several studies have confirmed this. In a large meta-analysis published in 2000, researchers at Ohio State University studied 60 previously published articles exploring the relationship between hypnosis and smoking cessation. The results showed that the cessation rate of smokers who used hypnosis to quit smoking was about 20% to 30% after one year. Not bad, right?
    But few people use only one method. Many studies exploring the success of hypnosis in quitting smoking have found that it is usually used in combination with psychological counseling and other techniques, so it is difficult to accurately determine the effectiveness of any one method.
    Men have a slightly higher success rate in quitting smoking using hypnosis than women, the reason for which is unclear, but it may be that women are more concerned about weight gain. This might sound a bit sexist, but as far as I know, scientists are researching this issue.
    The side effect of weight gain is not an exaggeration (for both men and women). Smoking is harmful to every part of the body; besides metabolism, it forces the body to expend extra energy to detoxify inhaled chemicals.
    If you are really concerned about a slower metabolism, you might try more exercise and chewing nicotine gum (a cigarette substitute) occasionally. A study in the *American Journal of Clinical Nutrition* found that nicotine gum containing caffeine can increase metabolism by 10%, enough to offset the metabolic decrease caused by quitting smoking.
    A few hypnotherapy sessions may not immediately eliminate the bad habit of smoking, but they can ultimately help you embark on the refreshing path to enjoying a smoke-free life.

Taking a bath during a thunderstorm? Are you trying to get yourself killed?

    Chapter Nine: The Chaotic Modern World, Is Your Cellphone Safe?
    Taking a Shower During a Thunderstorm? Are You Trying to Die?
    It sounds like a fantasy, but the answer to this question shows that some seemingly absurd conclusions are actually quite true.
    When I first heard this warning years ago, I thought my parents had gone mad. Get out of the bathtub because of a thunderstorm? I thought they must be joking. Of course, everyone knows that swimming pools attract lightning in the summer, but bathrooms offer more protection. Bad weather is precisely the time to enjoy a long, relaxing hot bath. I thought this warning was something my dad made up, like trying to save on water bills and make me end my enjoyment quickly. So I hoped that my analysis would finally debunk this myth, just like many others have.
    However, I discovered that things weren't as I expected.
    People get electrocuted during thunderstorms because when lightning strikes a building (even if the building is weather-resistant), it can conduct through pipes, such as metal water pipes and electrical wiring. Anyone who comes into contact with a faucet or related device will get an electric shock. Not only are metal water pipes conductive, but the water they carry can also conduct electricity due to impurities.
    Lightning may seem spectacular and powerful, but it's inherently lazy. When lightning strikes, the current travels to the ground along the path of least resistance, meaning it might skip a good conductor (metal pipe) and choose a better one (you). So, if the current happens to enter your water pipes, and you happen to be standing in the bathtub with the hot water tap on, your shower could come with an extra injury.
    Sure enough, the probability of this happening in the real world is very small. But when it does, it can sometimes have interesting consequences. In October 2006, a 27-year-old Croatian woman was brushing her teeth at home when lightning struck her house and conducted to her faucet. She was rinsing her mouth in the sink when the current entered her mouth and flowed through her body. "I felt it pass through my body, and then I don't remember anything," the woman, Natasha Timarović, told reporters from The Times and other magazines.
    At the time, the woman was wearing inexpensive rubber shoes, which prevented the powerful current from flowing from her heels into the ground. “These shoes are poor conductors,” her doctor said. “That saved her life.” Scientists agree.
    Maybe I should invest in my bathroom flip-flops.
    If you’re a scientist familiar with these kinds of tales, you don’t need to worry about making a living. Ron Hall, a meteorologist who heads the National Oceanic and Atmospheric Administration, would invite you to dinner. Hall has spent countless hours tracking lightning damage, and according to his research, 10 to 20 people in the U.S. are struck by lightning each year while showering, using faucets, or related facilities during thunderstorms. About one of them dies. “There are countless tales about lightning,” he told me, “but I’m not talking about any of them.”
    During a thunderstorm, a building with lightning rods acts like a metal cage. The current from lightning passes around you and eventually disappears into the ground. That’s why it’s so important to have lightning rods on the top of your building: they safely conduct the current directly into the ground.
    Water pipes generally pose no danger unless your building lacks a lightning rod, the lightning rod is not properly grounded, or you come into contact with the lightning rod's conductive path. Nowadays, at least in cities, most buildings and facilities are grounded. Strange accidents do occur, but are very rare.
    Dr. Mary Ann Cooper, who studies lightning injuries at the University of Illinois at Chicago, has found cases of people being struck by lightning while using telephones during thunderstorms, some even fatally. This is another long-standing fear. For example, in 1985, a high school student in New Jersey died while using a telephone; the powerful current from lightning traveled through the telephone line into his ear, ultimately causing his heart to stop beating. Investigators later discovered that the victim's telephone line was not properly grounded.

Will watching TV frequently make children less intelligent?

    We live in the age of television. We're not just television enthusiasts, we're practically television fanatics. American children watch an average of about four hours of television a day, and thousands of movies, shows, and commercials every year. By the time a typical high school student graduates, the time spent in the classroom is roughly equal to the time spent sitting on the sofa staring at a CRT monitor.
    Considering that children's time is completely consumed by television, it's necessary to revisit a well-worn question: Does television really make children dumber?
    Undoubtedly, television viewing is closely linked to intellectual decline. Numerous studies have shown that children who watch a dozen or more hours of television per week perform worse academically than their peers who don't watch television; of course, the key to preventing television viewing is for parents to resolutely turn the television off. However, this doesn't necessarily mean that television directly harms the brain; it may simply be depriving children of study time.
    Therefore, to answer this question more directly, scientists have been trying to find the relationship between television viewing and decreased attention, especially in infants and young children. This is because the brain develops most rapidly in the first few years of life. It is generally believed that environmental stimuli such as the rapid switching of television images can cause changes in the brain.
    But are there any permanent damages?
    The answer is yes. A study published in the journal *Pediatrics*, which investigated 25 children, found that if children watched too much television between the ages of 1 and 3, their risk of developing attention deficit hyperactivity disorder (ADHD) increased by age 7. In some cases, just one extra hour of television per day increased the risk of developing the disorder by 10%. Previous studies exploring the link between television and ADHD have yielded similar results.
    However, anxious parents might find some reassurance after reading the following: Two large, in-depth studies, including one observing 5,000 children nationwide, found absolutely no link between television viewing and ADHD. Therefore, most scientists believe that television viewing may have some impact on children, but the impact is limited. In the United States, nearly half of households own three or more televisions, and nearly 60% of children have one in their bedroom. Let's pray that these scientists are truly scientific!
    Even so, we still have concerns. Frequent television viewing can lead to poor sleep quality and increase the likelihood of smoking and obesity. If you watch TV for five hours or more a day, you'll experience all of these negative consequences firsthand. Let me repeat: five hours—that means from the start of "The Lucky Draw" to the end of "The Late Show with David Littman." Ah, precious prime time! If you ask me why I'm so worried, I must tell you with caution: in 2005, we watched an average of 4.5 hours of television a day.

Does noise increase the risk of a heart attack?

    Researchers have long suspected that excessive daily exposure to noise, such as car horns, office clatter, and the clanging of Mr. Softheart ice cream trucks, can raise blood pressure and harm health. Do you feel uncontrollably irritated whenever a garbage truck roars past your door or a power drill blares? Imagine how torturous it would be if these sounds constantly filled your ears!
    When you suddenly hear a loud bang, your body triggers a series of physiological chain reactions. The loud noise first elicits a strong psychological response—anger, stress, and fear. These emotions surge forth, along with a spike in adrenaline and other hormones that cause cold sweats. Ultimately, you will experience elevated blood pressure and cholesterol levels, thereby increasing your risk of cardiovascular disease.
    Like everything in life, the harmful effects of noise on the body differ between men and women, and even among individuals. Genetics and personality undoubtedly play a role, but it is also related to the deep-seated evolutionary differences between men and women in dealing with emotional difficulties. For example, men are more prone to heart attacks when under stress because hormones they release, such as testosterone, amplify the chain reaction caused by elevated blood pressure and cholesterol levels. On the other hand, women under stress typically release hormones like oxytocin, which have a calming effect.
    On a more scientific level, numerous studies over the past few years have found that frequent exposure to various noise environments can indeed increase the risk of heart attacks.
    One particularly interesting study was published in the *European Heart Journal*. This study surveyed 4,000 people, half of whom were heart attack survivors. Researchers evaluated the noise levels in their daily work and environment and found that even after adjusting for factors such as smoking and age, chronic noise pollution could still mildly to moderately increase the risk of heart attacks. Other studies have gone further, finding that people who wear earplugs at work have a lower risk of heart attacks than those who don't.
    When exposed to rumbling and noisy traffic and other environmental noise, women's risk of heart attack increased nearly three times, while men's increased risk was only about 50%. However, women seemed less affected by noise in the office, while men's risk increased by nearly three times.
    The reasons for this phenomenon are currently unknown, but some scientists believe that women may be better able to adapt to common office noises such as conversations, chatter, and verbal arguments. However, we have no way to verify this, so it remains entirely a hypothesis. In other words, there's a sense of conflicting opinions.

Nutrition, oh nutrition, did I microwave you?

    Microwave ovens are now widely used in kitchens, dormitories, and various dining areas, yet people still suspect that their radiation is harmful to food, causing the loss of vitamins and nutrients.
    Take a moment to think about anything related to "nuclear material" and "radiation." Power lines and cancer, cell phones and brain tumors, nuclear reactors and annihilation. Naturally, we would apply the same "treatment" to microwaves. I've been asked countless times if standing in front of a microwave oven is enough to cause cancer (the answer, of course, is "no").
    Articles denouncing microwaves are ubiquitous on the internet. They almost unanimously accuse microwaves of destroying vitamins in food. One well-known website even claims that frequently eating microwaved food raises cholesterol, lowers hemoglobin, and "damages" cells—in short, causing endless harm.
    This sounds like microwave ovens heat food by promoting molecular vibrations, essentially no different from an oven, just faster. However, anyone with a modicum of scientific knowledge knows that microwaves have little or no effect on nutritional value.
    Undoubtedly, every cooking method damages vitamins and other nutrients in food. The degree of damage depends on the cooking time, the amount of liquid used, and the cooking temperature. Since microwave ovens use less heat and cook for shorter times than conventional cooking methods, they should theoretically be the least damaging cookware
    in terms of nutrients. The most heat-sensitive nutrients are water-soluble vitamins, such as B vitamins and vitamin C, which are commonly found in vegetables.
    In a study conducted at Cornell University, scientists investigated the effects of cooking methods on water-soluble vitamins in vegetables. They found that spinach cooked in a microwave oven retained almost all of its folic acid, while about 77% was lost if cooked on a conventional stovetop. They also surprisingly found that microwaved bacon contained significantly lower levels of the carcinogen nitrosamine compared to bacon cooked using conventional methods.
    As for vegetables, there is only one problem with microwave cooking: adding water greatly accelerates nutrient loss. A 2003 study published in the *Journal of Food and Agricultural Science* found that soaking kale in water while microwaving resulted in a loss of 74% to 97% of its antioxidants. However, if cooked without water, most of the nutrients in cabbage will remain intact.

Can cell phones really cause brain cancer?

    Most mobile phone users share a common concern: the fear that constantly whispering sweet nothings into their phones will bring retribution. Of course, you might be one of the "minority" who doesn't yet own a mobile phone. If you're in the latter group, after being fed up with the loud, uninhibited conversations of those around you while on their phones, you might wish for "good deeds to be rewarded and bad deeds to be punished."
    Regardless of the motivation, whether mobile phones cause brain cancer is a question worth exploring. Mobile phones emit low-energy radiation called radiofrequency energy. To date, no substance has been linked to cancer more closely than radiation. Therefore, it's quite possible that while mobile phones are proliferating like locusts, they might also be slightly increasing the incidence of brain cancer nationwide.
    So what's the connection? In reality, the radiation emitted by mobile phones is very different from the powerful ionizing radiation we are regularly exposed to, such as medical X-rays, and is far less harmful. Mobile phone radiation is characterized by low doses and long durations, similar to microwave ovens (which, currently, appear to be safe). Therefore, the fundamental question is whether the low dose of radiation concentrated in the ear, if sustained for an extended period, will cause damage.
    Many people insist that this is the case. David Ray, a Florida businessman who worked in the telecommunications industry for many years, was one of the first to file lawsuits against the mobile phone industry. In his complaint, he claimed that his wife developed a brain tumor in the early 1990s due to frequent mobile phone use. Years later, a Baltimore doctor, specifically a neurologist named Chris Newman, diagnosed the cause of his own brain tumor. In an $800 million lawsuit against Motorola, Newman claimed that the location of his brain tumor was precisely where mobile phone radiation passed through the skull.
    It's worth noting that both lawsuits were ultimately dismissed due to insufficient evidence. These events sparked fear, but similar lawsuits in the future are likely to face a similar fate, as scientific data seems to suggest that this fear is somewhat unfounded.
    There are two different types of evidence: one from epidemiological studies of human populations and the other from direct animal studies. In the laboratory, scientists have found that radiofrequency radiation exceeding 2000 MHz can damage the DNA chains of animals, leading to cancer-causing gene mutations. However, most mobile phones operate at frequencies below 2000 MHz, typically between 800 and 1900 MHz (and usually at lower levels).
    While some studies have found a link between mobile phone use and cancer, many more have not confirmed this.
    In 2000, the National Cancer Institute observed nearly 800 patients with brain tumors and found that they did not use mobile phones more than a group of healthy individuals. The highest mobile phone users did not have an increased incidence of cancer, and the location of the tumor was unrelated to which side of the body was used for making calls. A similar large study published in the *New England Journal of Medicine* that same year, which surveyed thousands of Danes who used mobile phones, yielded similar results. However, another study in 2006 compared hundreds of brain tumor patients with nearly a thousand healthy individuals, finding no link between mobile phone use and brain tumors. This study will conduct further analysis, carefully verifying telephone company records to determine the reliability of participants' reported frequency and duration of mobile phone use.
    The US FDA, which regulates radiation emitted by certain electronic products, states that there is currently no scientific evidence linking mobile phones to health conditions. Another organization, after reviewing the relevant evidence, reached a similar conclusion. Currently, the most dangerous thing to do while using a mobile phone is to talk on the phone while driving.
    However, mobile phones are still a relatively new technology, and most research has been limited to a few years, or even less than 10 years. The debate on this issue will continue, because technically speaking, it is too early to draw conclusions about the long-term safety of mobile phones.
    But if using a mobile phone makes you uneasy, you might try the following:
    Completely abandon your mobile phone. This will inevitably reduce your social life, but you will save a considerable amount of money on mobile phone bills each month.
    Use headphones or earphones so that the phone is as far away from your head as possible.
    Avoid using the phone when the signal is low, as the phone will emit more radiation to try to establish a connection in such situations.
    If your phone has an antenna, try to extend it, as most radiation is concentrated in the center of the antenna.
    The Federal Communications Commission (FCC) has a website where you can find the radiation levels emitted by your mobile phone and other wireless devices.