In recent years, the concept of health care has become more and more popular, and various health care products have sprung up. These health care products are all under the banner of "enhancing immunity, anti-aging, lowering three highs, relaxing bowels, detoxifying, beauty beauty and slimming", but in fact, these health care products are not very helpful to health, and they are particularly expensive, and they can't slim down anywhere except wallets.
Green juice
Merchants claim that green juice can regulate blood pH, supplement dietary fiber, and is rich in protein and minerals.
I don't know why, there are always people who wish they were more alkaline. There is a simple way: just quarrel. When you are emotional, your breathing will become shallow and fast, and you will exhale more carbon dioxide. Carbon dioxide is an important buffering substance, which is responsible for maintaining the pH value of human body in a suitable range. Once too much carbon dioxide is lost, it will cause alkalosis and cause fainting.
In other words, it's just that the green juice can't change the pH value. If possible, I'm afraid someone will be hospitalized for this.
As for nutritional components, the Institute of Health and Environmental Medicine of Tianjin Academy of Military Medical Sciences has studied wheat seedlings, and both protein and main minerals are inferior to soybeans. In addition, beans are an excellent source of dietary fiber. In contrast, wheat seedlings, vegetables and fruits are not so juicy.
Healthy cola
The so-called healthy cola is to replace sucrose with artificial sweeteners and then add indigestible dextrin. Not long ago, the British Medical Journal just published a review. According to dozens of existing studies, artificial sweeteners can neither lose weight nor endanger health. Indigestible dextrin is a kind of dietary fiber, which is processed from starch. The Reference Intake of Dietary Nutrients for China Residents suggests that the daily intake of dietary fiber is 25 to 30 grams, while the content of healthy cola is 5 grams per can. ?
Generally speaking, healthy coke is slightly better than ordinary coke, after all, it contains dietary fiber. But considering the harm of carbonic acid to teeth, it is unrealistic to drink less and hope to lose weight by it.
collagen
There are many products related to collagen, and many people also like to eat some foods rich in collagen, hoping to have firm and smooth skin.
In fact, there are three major contributors to firm and smooth skin: collagen and elastic fibers are interwoven into a net, and fat pads are filled in it. Among the three heroes, fat is the most talkative and will change with weight; Elastic fiber is the most troublesome. They form at about one year old, and then they will only decrease, but will not increase for life.
Collagen is in between. On the one hand, we have the ability to synthesize collagen. On the other hand, this synthesis is influenced by many factors, such as tobacco, sex hormones, blood sugar, sun exposure and so on. It may not be sent to the skin after synthesis. Bone and cornea also need collagen.
In other words, the collagen in food will not be sent to the skin as it is, but will be decomposed first and then synthesized. As for where the newly synthesized collagen goes, it depends on the needs of the body. It's no use worrying.
Some friends may ask, then, what about anti-sugar pills? Can anti-glycation make the skin better?
The sugar in blood is at a high level for a long time and can combine with hemoglobin to form glycosylated hemoglobin, which is called non-enzymatic glycosylation. Studies have shown that non-enzymatic saccharification can also occur in skin, and glucose in extracellular fluid can combine with collagen, interfere with its structure, hinder the transport of substances, and lead to thinning and wrinkling of skin.
Anti-sugar pill (source: weibo.com)
However, the research in this field is very late, and the specific mechanism is still unclear. Vitamins, aspirin, metformin and many Chinese herbal medicines all showed certain anti-glycation effects in the experiment. But whether these experiments are in vitro experiments or animal experiments will have an impact on the human body, and God knows how much it will have an impact.
resveratrol
China people believe that proper drinking can relax the meridians and promote blood circulation. Similarly, Westerners believe that drinking red wine properly can resist aging, protect blood vessels and even prevent cancer, because red wine contains resveratrol.
Previously, a series of studies did show that resveratrol has various magical effects. Unfortunately, at the end of last year, people found that these papers were false; According to the situation of experimental animals, a 60 kg adult needs to drink 180 bottles a day to achieve the effect of prolonging life. If you really drink so much, you will have kidney failure.
Similarly, at the end of last year, the top international medical journal The Lancet published a study with hundreds of thousands of samples. The conclusion is that there is no proper amount of alcohol, and the more you drink, the greater the harm.
Of course, there are resveratrol supplements on the market. Although researchers have not found that eating resveratrol supplements is harmful to the health, the resveratrol in the supplements is difficult to be absorbed by the human body, so buying it is also a waste of money.
melatonin
Sleep is more complicated than blood sugar. There are three kinds of bad sleep, one is transient, leave him alone, the other is forced to work overtime, work shifts and fly for a long time, and the other is sleep disorder, which makes you more tired when you wake up.
Under the action of light, the human body will synthesize melatonin, inhibit the activity of neurons and make people feel sleepy. In other words, endogenous melatonin is an important part of sleep. Extra melatonin is helpful to sleep problems caused by overtime, shift work and jet lag, but the role of sleep disorders in adults is still inconclusive.
It should be reminded that the US Food and Drug Administration (FDA) lists melatonin as a dietary supplement, which means it is safe, but its therapeutic effect and monitoring are not as good as an appropriate drug.
vitamin C
Many people believe that vitamin C supplementation every day can enhance physical fitness, resist aging and prevent colds.
The debate about vitamins has been going on for decades, and the more recent large-scale research, the more negative it is. Linxian County, Henan Province is a high incidence area of esophageal cancer in China. The Cancer Institute of China Academy of Medical Sciences and the National Cancer Institute of the United States have conducted long-term and large-scale intervention research there. The results showed that vitamin C supplementation could not prevent esophageal cancer. The same is true of colds. Many large-scale surveys show that as long as vitamin C is not lacking, no matter how to supplement it, it can't reduce the probability of catching a cold or alleviate the symptoms of a cold.
Fat-reducing product
There are many slimming products on the market, some boast about L-carnitine, some focus on conjugated linoleic acid, and some are mysterious, "pure natural products with outstanding effects" and so on.
Two days ago, CCTV just exposed a "network celebrity" weight loss product. The manufacturer is very clever. The product itself is safe and has no influence. The secret lies in the gift, which contains a variety of forbidden ingredients to suppress appetite. The store claims that as long as they are taken together, they can be thin when lying down. As a result, within a few days, the client fainted and was hospitalized.
In fact, for thousands of years, especially in the last hundred years, major pharmaceutical companies have invested heavily in the research of diet pills. However, the absorption and metabolism of nutrients involve every cell, and diet pills or side effects have been banned, or the slimming effect is not good.
As for health care products, to put it bluntly, it is food. How can it be "thin when lying down"?
Not long ago, The Lancet conducted a survey in 195 countries and regions, and analyzed the relationship between various eating habits and diseases. The results show that the top three harmful diets are high salt, low miscellaneous grains and low fruit. On the other hand, as long as we limit salt, increase the intake of miscellaneous grains and eat more fruits, we can greatly reduce the risk of illness. If we can control fat, free sugar and cooking forms on this basis, we can expect health. As for various dietary supplements and magic foods, IQ taxes are mostly. It is better to save money to buy some fruits and grains.
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Author: Zhao Yanchang