Overdose

Information on potential toxicity and side effects associated with excessive intake of certain vitamins and supplements.

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All 21 Functions and Role 8 Absorption and interaction 1 Overdose 1 Signs of deficiency 3 Vitamin blood tests 1 Supplement forms 1 Daily allowance 1 When to take 1 Natural Sources (Food) 4
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Too Much Calcium: Heart and Kidney Risks
21 March, 2026 6 min

Too Much Calcium: Heart and Kidney Risks

Calcium is one of the most widely used mineral supplements in the United States. According to NIH data, roughly 43% of American adults take a supplement containing calcium — often on top of a diet that already provides adequate amounts from dairy, fortified foods, and leafy greens. The problem? Too much calcium can quietly harm […]

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