There is no good evidence that vitamins protect against heart disease or cancer, the commission said

Vitamins and supplements have no benefit in preventing cancer or heart disease, a new review from 84 studies.

Based on this finding, an independent group of experts from the U.S. Preventive Services Group said on Tuesday that there was “insufficient evidence” to recommend or prohibit the use of multivitamins or supplements to avoid harm to health.

The review examined the effects of popular compounds such as beta-carotene, folic acid, calcium, calcium, magnesium, selenium and zinc, as well as multivitamins and vitamins A, B, C, D and E.

However, the instruction was accompanied by warnings: This does not apply to children, people with chronic illnesses or people with certain malnutrition. The working group also recommended the daily use of folic acid to people who are pregnant or planning to become pregnant.

For moderately healthy people, however, “there is no reason to start taking dietary supplements widely,” Dr. said. Howard Cesso, Brigham and Deputy Director of Preventive Medicine, Women’s Hospital. Cesso is not a member of the working group, but two of his studies have been included.

“For those currently taking multivitamins, I don’t think this post should necessarily change what you’re doing, but it’s always important to reconsider why you’re taking dietary supplements,” Cesso said.

The U.S. Preventive Services Working Group last made recommendations in 2014 on vitamins and supplements to prevent heart disease and cancer.

Dr. Jenny Jia, an instructor in general internal medicine at Feinberg School of Medicine at Northwestern University, said extensive research has been underway since 2014. “We still don’t see any convincing evidence that vitamins and supplements help in general. Prevention of heart disease and cancer to receive”.

Jia, who co-authored an editorial with a review on Tuesday, said the purchase of vitamins and supplements was largely a “waste of money.” People in the U.S. will spend nearly $ 50 billion on dietary supplements by 2021, the authors say.

“Healthy eating is still the first line of defense”

In a new study, beta-carotene was linked to a higher risk of death from lung cancer and heart disease, and vitamin E in particular found strong evidence that it did not prevent cancer or heart disease. Therefore, the working group refused to take supplements to prevent heart disease or cancer at the suggestion made in 2014.

Experts generally agree that a balanced diet and regular exercise are the best way to reduce the risk of cancer or heart disease, rather than taking vitamins or supplements.

“It should be clear from the guidelines that a healthy diet is still the first line of defense against the prevention of chronic diseases,” Cesso said. “Supplements should mean no crutches or not enough to compensate for the diet.”

But vitamins and supplements can have some benefits, he added, for older people who are trying to digest vitamins and nutrients through food. The session presented mixed evidence that multivitamins may reduce the risk of cataracts or age-related macular degeneration or delay cognitive impairment.

“We really need to make fun of this and do more to address other endpoints in addition to these recommendations, such as cardiovascular disease and cancer,” he said.

Even the relationship between multivitamins and cancer requires more research, he added, because the review found that multivitamins may be less beneficial for cancer outcomes. One of Sesson’s tests showed that daily use of multivitamins reduces the overall risk of cancer among male doctors. However, another study found no evidence that multivitamins reduced the overall risk of cancer in men or women.

“If there’s any benefit, it’s very small,” Jia said.

Supervision for small FDA vitamins

Dietary supplements can be purchased over the counter and do not require permission from the Food and Drug Administration. Because of this, Cesso said, manufacturers have “more flexibility in what they can say.”

“There is a general perception that all of these dietary supplements are harmless,” Jia said.

According to the session, some recipes can have different effects on health.

“You can’t get the amount of vitamins and minerals in chewing gum, which is similar to the nature described, compared to a regular pill,” he added, adding, “We don’t really have the type of vitamins.

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