wb.md Aug 03 25
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Risks Linked to Excessive Vitamin and Mineral IntakeExceeding safe vitamin levels can cause nausea, nerve issues, and heart risks, especially from vitamin D and folic acid supplements.
- Excessive vitamin C, zinc, or selenium intake may lead to symptoms such as nausea, hair loss, and mild nerve damage.
- Consuming fortified foods alongside supplements can easily result in surpassing recommended daily nutrient limits.
- Overdosing on vitamins from unfortified foods alone is rare; supplements and enriched products pose the main concern.
- High doses of vitamin D and folic acid can cause serious health issues, including heart problems and masking vitamin B12 deficiencies.
Manufacturers have shifted their focus from what they've taken out of food -- such as its fat, sugar, or salt -- to what they're putting in, whether it's vitamin D, probiotics, or omega-3 fats -- whatever nutrient is in vogue.— David Katz, MD, director of the Yale University Prevention Research Center, discusses the impact of overfortification of foods.
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