Those that mentioned that they had used dietary supplements had been requested for particulars, together with how typically they took the merchandise.
"As potential benefits and harms of supplement use continue to be studied, some studies have found associations between excess nutrient intake and adverse outcomes, including increased risk of certain cancers".
With more than half of USA adults using dietary supplements, Zhang and her colleagues explored their effects, as well as the impact of nutrients found in foods, with data from 27,725 adults participating in the National Health and Nutrition Examination Survey.
All individuals had been 20 or older after they signed on to be a part of the NHANES. The same was not true for calcium intake from foods. After that, a household interview was held, and they had to answer whether or not they had used any vitamin supplements in the previous 30 days.
Perhaps most alarming is that the study found that those who took high levels of supplemental calcium over prolonged periods of time may have an overall shorter life expectancy. In 2011, a large study found that use of vitamin E supplements was linked to an increased risk of prostate cancer in men. These components are "already recognized to cut back mortality", Zhang stated.
During the median follow-up of six years, 3,613 of the study participants died. About 945 cardiovascular deaths and 805 cancer deaths were included.
The scientists behind the work discovered that adequate intake of vitamin A, vitamin K, magnesium, zinc and copper were associated with a lower risk of premature death, but only when these nutrients came from food.
Disney+ streaming service to launch in USA on November 12
The new streaming service plans to bring content spanning beloved animated classics to newly produced movies and shows. Marvel series confirmed: Marvel boss Kevin Feige confirmed several rumored Marvel series during his presentation.
On the other hand, risk of death from cancer is only associated to excess calcium from dietary supplements, not from food.
Zinc is present in beans and legumes, resembling lentils and chickpeas. Eggs, as well as orange and yellow fruits and vegetables are high in vitamin A.
The association between a lower risk of death and nutrients consumed in foods remained significant even after those factors were accounted for.
When sources of nutrient intake were evaluated, the researchers found that lower risk of death associated with adequate nutrient intakes was limited to nutrients from foods, not from supplements. "When we take a nutrient out of a food and concentrate it in a pill, it's not quite the same thing".
"I don't think you can undo the effect of a bad diet by taking supplements", said Kumar, an assistant professor of medicine at NewYork-Presbyterian and Weill Cornell Medicine. More and more evidence suggests no benefits.
"It's more likely to be someone looking for more energy and vitality or trying to treat symptoms such as hair loss or leg cramps", she said.
Another study has warned that vitamin supplements probably aren't an adequate substitute for a poor diet - and, in fact, at least one popular supplement may increase cancer death risk.
However, no link was found between increased consumption of foods containing calcium and the disease.