With a growing focus on health, all kinds of health information and concepts are shared and practiced in daily life. However, medical research has confirmed that some widely accepted ideas are actually misconceptions. We list these misconceptions below to provide readers with valuable health guidance.
Dietary Misconceptions Misconception 1: A Low-Fat Diet Leads to Weight Loss
Most Americans eat low-fat foods, yet many of them are getting fatter. This is enough to prove that the above viewpoint is incorrect. A national survey in the United States found that over the past 14 years, despite reducing fat in food by 7% through various means, the number of people who are overweight has increased by 9%. Even if you replace high-fat foods with low-fat ones, your weight may still increase.
This is because even though you are eating low-fat foods, you are very likely consuming more calories. This means that while the fat content of the food has decreased, you are eating more of it. For example, there is only a 40-calorie difference between half a cup of vanilla ice cream and half a cup of low-fat vanilla ice cream. But you are very likely to, misled by the "low-fat" label, indulge in a full cup, meaning your total calorie intake would be more than that of half a cup of regular vanilla ice cream. The total daily calorie requirement for women is between 1600 and 2000. Multiplying your weight by 12 gives you an approximate daily calorie requirement. Misconception 2: Be Cautious About Drinking 8 Glasses of Water a Day
Most people believe that drinking 8 glasses of water (2000cc) a day is beneficial to health. However, in recent years, some medical research departments abroad have raised objections. Many experts have pointed out that it is not necessary to drink 8 glasses of water every day, as drinking too much water can also cause problems for the body.
Just like calorie intake, water intake should be based on your needs. There is currently no scientific evidence to suggest that drinking more water can help detoxify the body. On the contrary, drinking too much water can easily disrupt the body's electrolyte balance (leading to significant loss of sodium and potassium ions) and cause water-soluble vitamins (such as B and C) to be excreted more easily. So, how much water should a normal person drink per day? Scientific research has found that on average, the body loses about 1800 to 2000cc of water daily through urine, sweat, or skin evaporation. Therefore, for years, people have been saying that healthy adults need to supplement about 2000cc of water daily. However, this 2000cc of water does not have to come from drinking water alone; the moisture in food should also be included. This is the correct approach to health preservation.
In fact, the various foods we eat every day contain a lot of water. For example, most vegetables and fruits are over 90% water, while foods like eggs and fish contain about 75% water. Roughly estimated, from one meal, we can intake at least 300 to 400cc of water from food or soup. Therefore, after deducting the 1000 to 1200cc of water obtained from food over three meals, we only need to drink another 1000 to 1200cc of water per day. That's about 2 glasses in the morning and 2 in the afternoon, which is sufficient. Experts believe the general principle for drinking water is: no less than 500cc a day, but no more than 3000cc.
Wellness Misconceptions Misconception 1: Sleeping is a Universal Remedy for Beautiful Skin
In Traditional Chinese Medicine, the "five strains that harm the body" refer to: prolonged lying harming Qi, prolonged sitting harming muscle, prolonged standing harming bone, prolonged viewing harming blood, and prolonged walking harming sinew. Prolonged bed rest can easily lead to a deficiency of Qi and blood. Because Qi and blood interact, when Qi moves, blood moves; when Qi stagnates, blood stops; and when Qi fails to move, blood stasis occurs. The blockage caused by blood stasis leads to pain in the body. The saying "where there is free flow, there is no pain; where there is pain, there is no free flow" refers to this principle. Some people wake up feeling as if they are carrying a mountain on their backs, without any sense of relief or pleasure. Besides their original chronic ailments, oversleeping might also be a reason.
Actually, the saying "sleeping is a universal remedy for beautiful skin" is not entirely wrong. Its true meaning is "sleep when you should sleep," do not stay up late, especially during the 10:00 PM to 2:00 AM period, which is a crucial time for rest. Misconception 2: Brushing Teeth Immediately After a Meal
Latest research from dental experts suggests that brushing teeth immediately after a meal is harmful to dental health. The surface of a tooth crown is covered with a layer of enamel. After eating, especially consuming acidic foods, this enamel becomes soft. Brushing at this time can easily damage the enamel. Over time, the enamel on the teeth gradually diminishes, making one prone to dentin hypersensitivity, which can cause aching or painful teeth when eating. Therefore, dental experts remind us that it is best to rinse the mouth with water after a meal and wait 1 to 2 hours before brushing. Misconception 3: Natural is Always Better
In modern society, with so much pollution, natural foods and beauty products are considered beneficial to human health because they are free from pollution. The most typical example is aloe vera, which is both a healthy food and a beauty product. Aloe vera does have many wonderful effects on the human body, but there are over 500 varieties of aloe vera. Only a dozen or so are used for medicinal purposes, and only a few varieties are edible. Experts warn that the aloin in aloe vera has a "laxative" effect, which can easily lead to diarrhea. Different varieties of aloe vera have different medicinal properties and effects, and different body types will experience different results when using aloe vera.
Fitness Misconceptions Misconception 1: High-Intensity Exercise for Rapid Weight Loss
Although high-intensity exercise also contains the word "exercise," it is not a good method for weight loss. Weight loss through exercise has its requirements: low intensity, long duration, and the ability to breathe normally and chat freely after the exercise, with a quick recovery from fatigue. However, some people are eager to lose weight and try to run several kilometers at a sprinting speed, as if in a 100-meter dash. They are lucky if they don't collapse. Burning fat takes time; high-intensity exercise does not provide the right conditions for fat burning. It will only lead to thicker muscles, an overloaded heart, and prolonged discomfort. For the general public without an exercise prescription, it is very likely to cause injury, which is得不偿失 (not worth the loss). Misconception 2: Abdominal Exercises are Enough to Reduce Belly Fat
Frantically doing abdominal exercises to reduce a "beer belly" may not be effective. The concept of energy consumption is holistic, not local. For example, when losing weight through exercise, although the face is not being exercised, it will still become slimmer. Only when the calories burned from exercise exceed the calories consumed will there be a reduction in overall body fat, not just in a specific area. Excessive abdominal exercises can easily lead to muscle fatigue and injury to that area. To reduce belly fat, in addition to abdominal exercises, one needs to persist in full-body aerobic exercise and follow a low-fat, low-carbohydrate diet.
In the end, any type of exercise has its limitations and cannot effectively train the entire body. Moreover, when a person starts to enjoy a particular form of exercise, their body adapts to it after a few weeks. This is the period when the exercise is most effective. Once the "exercise cycle" is over, the fitness effect diminishes. Fitness is like eating; you need to change your routine frequently. This not only ensures good results but also prevents boredom and helps maintain motivation.