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Calcium supplements linked to cancer in major study

13 April 2019

What's more, consuming large doses of some nutrients through supplements might be harmful - the study found that getting high levels of calcium from supplements was linked to an increased risk of death from cancer. Intake of vitamin A, vitamin K, magnesium, zinc and copper at recommended levels was associated with a reduction in all-cause or cardiovascular mortality, but only when those nutrients were obtained from food.

With more than half of US 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.

In fact, some supplements - such as calcium and vitamin D - were actually associated with a higher risk of cancer. Zhang and her colleagues discovered a decreased threat of demise from any trigger amongst those that consumed ample amounts of vitamin Okay and magnesium, and a reduced danger of cardiovascular dying amongst these with enough intakes of vitamin A, vitamin Okay, and zinc.

A new study demonstrates the ineffectiveness of dietary supplements in reducing the risk of death. In addition, the study found that taking dietary supplements didn't lower the risk of death in participants, which included U.S. adults ages 20 and older. While certain nutrients may contribute to a longer life, they need to come from a food source, the study found.

The study, which was published on April 9 in Annals of Internal Medicine, used data from the National Health and Nutrition Examination survey from 1999 to 2010, which was linked to mortality data from the National Death Index.

Dietary supplements have remained controversial for a number of reasons, including lack of adequate regulations that result in many poor quality products that, in some cases, contain little or no active ingredients. The same was not true for calcium intake from foods.

Dietary intake of nutrients from foods was assessed using 24-hour dietary recalls. "It would also be worth exploring whether supplements might be helpful among those who have nutritional deficiencies". But after they adjusted for factors like education, socioeconomic status and demographics, it became apparent that mostly higher-income, better-educated people - who are more likely to be in good health to begin with - were taking supplements. Future studies should continue to examine the potential risks and benefits of supplements. That said, I'm going to go eat a salad.

Professor Hugh Montgomery, of UCL Institute Human Health and Performance, said: 'The growing message is routine vitamin supplementation offers little if any benefit to health and may cause harm. The problem found in a study from the University of Birmingham in 2018, is that vitamin and mineral supplements don't protect you from heart disease.

Calcium supplements linked to cancer in major study