The authoritative medical journal says vitamin supplementation is a waste of money that is not good for health

"
, I've spent so much money wrong!
"
when she saw a report entitled "Taking vitamin tablets is not good for your health", su Mei,
,
, exclaimed.
10 years
, she has been taking a variety of vitamin tablets, in addition to one multivitamin tablet a day, but also a calcium tablet. Most of these were purchased by her friends from the United States, Canada, Hong Kong and other places."
always feel that their physical shortcomings vitamins, so a little supplement every day, will be at peace of mind. Sometimes after days of not eating vegetables or fruits, comfort yourself by saying that vitamin tablets are available anyway.
"
Su Mei said.scientific paper published in the authoritative medical journal Almanac of Internal Medicine broke Su Mei's cult of vitamin tablets.
12

17
, scientists analyzed a large comprehensive study of 50 million people and found that taking vitamin supplements is almost in no exception a waste of money and not good for health.analysts say the study is a major blow to the vitamin supplement market. In the United States, vitamin supplements are used by more than half of the population.

2010, the U.S. supplement market share reached
28 billion U.S. dollars

(
about
170 billion
billion
)
. Annual sales of supplements in the UK are
65
billion pounds
(

about 64
billion yuan
)
, involving about
1/3
of the national population."
China is relatively small, probably accounting for
10%-20%
ratio,China Nutrition Society dietary nutrient reference intake revision expert group member, Sun Yat-sen University School of Public Health Professor Chen Yuming said,
"
are mostly highly educated people.
"
according to the China Health Association Market Industry Committee statistics,
2011
, China's nutritional supplement market share in
77
billion yuan.but one of the authors of the article, John
.
, a researcher at the Hopkins University School of Medicine in
.
Miller told China Youth Daily:Whether it is the United States or China, but anyone with good nutrition, vitamin supplementation is not necessary, otherwise not only there are no obvious benefits, perhaps it will be harmful.
” Some people claim that there are many nutritional defects in the diet, but the fact is that our usual nutrition is completely adequate the initial exposure to vitamin supplements, Su Mei was moved by its advertising.
"
feel like the old man's sendan, a few baskets of green leafy vegetables and fresh fruit shake into a nail cap-sized vitamin. There are also ads that shape vitamin tablets into health shields that feel like eating can protect against a variety of diseases.
,"
recalls Su Mei. She also buys it for her parents and supervises them to take it every day. scientists are also fans of vitamins. Zheng Qisheng, a well-known biochemist and professor of nutrition at Nanjing University, insisted on taking
10,000
micrograms of retinol equivalent
(ugRE)
of vitamin
A
,
600
mg vitamin
C
,
10
mg vitamin
B1
and
100
mg vitamin
E
. Professor Ge Coyou, former president of the Chinese Nutrition Society, said in
2003
that he took vitamin
C400
mg daily and had been doing so for
10
years. Many people believe that, as an essential element of maintaining the normal function of biological organisms, vitamins have both life-sustaining and metabolic functions, but also can delay aging, lower cholesterol, help lose weight, excrete toxins in the body, prevent chronic diseases, and even prevent cancer. but numerous studies in recent years have come to almost subversive conclusions about the role of vitamins.
2007
, the Journal of the American Medical Association published a study by researchers from multiple countries that found that the death rate from overdose of vitamin
E
increased by
4%
and
β

carotene mortality increased by
7%
, vitamin
A
mortality increased by
16%
, and there is no evidence that vitamin
C
can extend life. , published today in the Anachrists of Internal Science, is known as the "
"
of vitamin
supplements
.
"
that is, no further research is needed.
,"
, a Chinese physician at the University of California Hospital, added. author of this article, three from the United States, John
.
Hopkins School of Medicine, a medical school from Walker University in the United Kingdom, and a senior associate editor of the journal,
"
are the best in the medical
"
. They came to this conclusion at a time when three papers were published in the current issue of the journal. 's first study, a systematic review of

27,
clinical studies on vitamin supplements and disease prevention by the U.S. Centers for Disease Control and Prevention of more than
,400,
000 participants, confirmed that there was no evidence that vitamin supplements reduced any mortality or prevent cardiovascular disease or cancer. Moreover, smokers who
β
only took carotene had an increased risk of lung cancer. same time, Harvard Medical School published a large population randomized double-blind control study. They followed
5,947
people
65,
years of age up to
12,
, who were taking multivitamins or placebos daily. Finally, it is concluded that long-term multivitamin use has no benefit to cognitive and language skills in older adults. the last study, the American Heart, Lung and Blood Disease Institute and the Center for Alternative Medicine looked at
1708
patients who had experienced a heart attack. These people took multivitamins or placebos twice a day for up to
5
years, but more than half stopped taking them, making it difficult for the authors to draw any practical conclusions about vitamin effectiveness. review of all the current large-scale findings on vitamin supplements, scientists say the evidence is strong:
"
these vitamins should not be used to prevent chronic diseases, but should be appropriate.
” “
We do not advocate taking vitamin supplements, especially high-dose supplements that are often harmful.



some people claim that our diet has many nutritional deficiencies, but in fact, we eat too much in general and our usual nutrition is completely adequate.
” Don't think about it like Americans wait until they've had a flood of vitamin tablets According to Luger, Americans have been taking vitamin supplements for thirty or forty years. He works and lives in Los Angeles, where many of the big supermarkets,
"
a wall is full of supplements, health care products, not thousands and hundreds of kinds, and not expensive, a few dollars can eat
"
a year. , Americans now take vitamin supplements to the point where
are
"flooded"
"
" situation. Some joke that American urine is the most expensive in the world because many of the water-soluble vitamins are lost with the urine. more
than
40 years ago, The Nobel Laureate and biochemist Linas
.
first advocated
"
high
"
vitamin
C
, good for health and anti-cancer. At one point, he was taking
18,000
mg
(
about
300
times the recommended daily intake
)
. People are also taking it in large
quantities, drugstores are in short supply, and by the mid-

70
s,
5
0 million Americans had heeded Pauline's advice, which vitamin producers call
"
Lenas
.
the Pauline effect
"
." 1980
in

, 1980, Pauline was interviewed at Oregon State University. When asked if

long-term use of
C
has no side effects
"
, Paulin's answer was swift and decisive:
"
no side effects.
" 7
, his wife died of stomach cancer.
1994
, Pauline died of prostate cancer. Today, there are numerous scientific examples of vitamin
C
effective in treating colds and preventing cancer, and that taking them in large quantities can also have side effects. "
been popular in China for more than a decade.
"
Chen Yuming told China Youth Daily. Many pharmacies in Beijing have opened up special best-selling drug special areas, just like the bookstore's

best-selling book counters
"
. The delicate packaging was printed with the endorsement star's confident smile, and the bottle contained yellow transparent pills. Dressed in a white coat, the self-proclaimed
"
doctor
"
guide told reporters: "
"
these nutrients are very popular.
” Lu Jie expressed concern about this: Like china, we should face up to this fact before the situation has fully expanded, rather than saying that you look at the Americans do the same, I eat, and so on to reflect on this issue."
” Yu Kang, a clinical nutritionist at Beijing Concord Hospital, pointed out that the study of the Analgesia of Internal Medicine is mainly based on the European and American population, and different from Chinese people, can not be taken directly, and according to some domestic studies, many Chinese vitamin intake is insufficient. this is also the view of some domestic dietitians. Wang Leijun, a public nutritionist at the national level, is one of them. In Wang Leijun's view, China's cooking methods more fried, in the process of vitamin loss, such as haze weather, will cause the body's vitamin
D
deficiency. As a teaching task, often feel tired and uncomfortable, Wang Leijun every day will eat a vitamin supplement. He thinks it's hard to get enough vitamins in fruits and vegetables every day. at
the 11th National Nutrition Science Conference of the Chinese Academy of Nutrition, held in Hangzhou in May
this year, the reference intake of vitamin
C
per day for adults was increased from
100
mg to
200
mg, with a maximum limit of
1000
mg. The recommended daily intake
vitamin
is
800ugRE (
male
)
and
700ugRE (
female
)
. Chen Yuming said that this amount is to take into account the amount of vegetables lost in the cooking process. A group of people who are least short of vitamins are taking vitamin tablets however, although different lifestyles and dietary structures in China and the West may result in different vitamin intake, this does not mean that Chinese needs vitamin supplements. "
can get enough in your daily diet