As well as, throughout a family interview, they answered whether or not they had used any dietary supplements within the earlier 30 days.
While certain nutrients are shown to reduce mortality when taken as food, scientists say that there's actually no link between taking dietary supplements and a lower mortality rate, according to a study published in the journal Annals of Internal Medicine.
The message to take from the new study, "even though it's not glamorous, is to focus on getting our nutrients from our diet rather than from supplements", Kelly Sanna-Gouin, a registered dietitian at the Detroit Medical Center, said. That quantity included 945 cardiovascular deaths and 805 most cancers deaths. It's important to note that the study involved self-reported dietary supplement use and dosage, and it's unclear whether specific usage durations may influence the outcome. Association between dietary supplement use, nutrient intake, and mortality among USA adults: a cohort study.
Unnecessary consumption of vitamin D supplements by individuals who were not deficient in the vitamin might increase the risk of death from any cause, the researchers found.
The new study isn't the first to link supplement use with harmful effects.
When comparing nutrient intake from food and supplements, researchers found there was a lower mortality risk when adequate intake of vitamin K and magnesium came from food instead of dietary supplements.
"Our results support the idea that. there are beneficial associations with nutrients from foods that aren't seen with supplements", seniorstudy author Dr. Fang Fang Zhang, an associate professor at the Friedman School of Nutrition Science and Policy at Tufts University in MA, said in a statement.
On the other hand, consuming adequate amounts of calcium from food had no association with cancer. While it is comforting to know that as a society we are taking a more proactive approach to our health, scientists say we may be going about it the wrong way.
At a time when more celebrities, social media influencers and wellness websites sell concoctions of vitamins, the new findings join a growing body of evidence that supplements don't help most people.
After they adjusted for factors like education and demographics, they found there is no positive connection between supplements and a longer life.
"For the general population, there's no need to take dietary supplements", Zhang says.
"Our results support the idea that, while supplement use contributes to an increased level of total nutrient intake, there are beneficial associations with nutrients from foods that aren't seen with supplements", said Zhang.
'Meanwhile, it is clear diets high in these components are healthy. "More and more evidence suggests no benefits, so we should go with what the dietary recommendations suggest to achieve adequate nutrition from food, rather than relying on supplements". Avoid supplements and consume green vegetables and fruit for good functioning of heart and kidney.