Risks of high-dose vitamins: How Vitamin A, D, E, Niacin and others can harm your heart and liver

High-dose vitamins and supplements, once seen as harmless, now show potential for serious harm. Excessive intake of Vitamin A, D, E, Niacin, and green tea extract can damage the heart and liver. These potent supplements, especially fat-soluble vitamins, accumulate in the body, leading to toxicity and adverse health effects, urging caution for consumers.