Researchers at Tufts University in the United States reported that very high intake of calcium supplements could be tied to an increased risk of cancer mortality. Separately, researchers from Tsinghua University in China observed that beta-carotene, a common supplement, was linked to a heightened risk of lung cancer. The media discussion around these findings has raised questions about supplementation practices.
Beta-carotene is a yellow-orange pigment found in carrots and a variety of vegetables. It is widely believed to support brain health, boost focus, and enhance memory. After reviewing a broad set of studies on beta-carotene’s effects, researchers at Tsinghua University concluded that the supplement might raise lung cancer risk in smokers by roughly one-sixth, with this association appearing even at modest doses.
In another line of investigation, American researchers reported a connection between the use of dietary supplements and a higher likelihood of cancer, specifically noting that calcium intakes exceeding 1000 milligrams per day were associated with doubled cancer mortality risk.
Nutrition experts emphasize that the human body is not designed to process excessive vitamin intakes. A veteran nutritionist from the University of Glasgow has highlighted that humans evolved consuming relatively small amounts of vitamins from food sources, a pattern that may not align with large supplement doses.
Additional commentary centers on the idea that the body may lack efficient mechanisms to clear surplus vitamins, allowing excessive stores to accumulate in organs. This accumulation could contribute to toxic effects over time. Contemporary guidance suggests that a balanced diet can generally meet vitamin and mineral needs, and that supplements should be used only under professional medical advice. This perspective aligns with a cautious approach to supplementation, especially for individuals without diagnosed deficiencies.
In the context of autumn health strategies, it is noted that vegetables can play a pivotal role in supporting immune function, provided they are part of a varied and balanced diet rather than a reliance on isolated pills.