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Time of India

Common vitamins that may cause unexpected health problems

Although vitamins are essential for maintaining good health, overconsumption can lead to unexpected side effects and health risks. While supplements can help fill nutritional gaps, taking high doses, especially of fat-soluble vitamins like A, D, E, and K, can build up in the body and cause toxicity. Potential side effects of vitamin overdose include nausea, liver damage, nerve issues, and digestive problems. Even water-soluble vitamins like B6 and C, when taken in excess, can have adverse effects. It's important to follow recommended daily allowances and seek professional guidance before starting any supplement regimen to avoid long-term health complications. How excessive vitamins can impact your health According to a study published in Advanced Pharmaceutical Bulletin, the following vitamins may pose health risks if overconsumed 1. Vitamin A: Risk of liver damage and birth defects Too much vitamin A, even from supplements, can accumulate in the liver, leading to toxicity, visual disturbances, and joint pain. In pregnant individuals, surplus intake increases the risk of birth defects. 2. Vitamin D: Hypercalcaemia and organ stress Often called the 'sunshine vitamin,' excessive intake of vitamin D may elevate blood calcium levels dramatically, causing kidney dysfunction, irregular heartbeats, and even fatal outcomes in extreme cases. 3. Vitamin E: Increased bleeding risk While offering antioxidant benefits, vitamin E in high doses can thin the blood, raising the chances of haemorrhage or stroke without warning. by Taboola by Taboola Sponsored Links Sponsored Links Promoted Links Promoted Links You May Like Many Filipinos don't know about this! Read More Undo 4. Vitamin C: Gastrointestinal discomfort Vitamin C is generally safe, yet high doses, especially above 2 grams daily, can lead to stomach cramps, nausea, diarrhoea, and increased risk of kidney stones due to oxalate buildup. Individuals with kidney disease or history of stones should use caution when taking large amounts. 5. Vitamin B6 (Pyridoxine): Nerve damage Excessive intake of B6 can cause sensory nerve damage, leading to numbness, tingling, or burning sensations in the limbs, a condition known as megavitamin‑B₆ syndrome. Supportive details from a clinical perspective can be found in the NCBI: doses over 200 mg/day are commonly associated with peripheral neuropathies. 6. Niacin (Vitamin B3): Flushing and liver stress High doses of niacin may trigger skin flushing, burning, and hypotension. Chronic consumption can also strain the liver, impairing its functionality. Why these 'Silent' crises occur Many of these vitamins can accumulate quietly, particularly the fat-soluble ones (A, D, E). Their long-term storage increases the risk of chronic toxicity. Water-soluble vitamins like B6 and B3 may still induce harm when taken in supra‑physiological doses. Supplement misuse, often without medical guidance, underlines the problem. Who should be especially cautious Individuals self-prescribing high-dose vitamins without prior deficiency testing People with renal, hepatic, or metabolic conditions Pregnant individuals (notably with vitamin A excess risk) Children, due to accidental overconsumption risks Healthcare professionals advise supplement use only when medically indicated. Safe supplement practices Only take supplements in moderation Always consult a GP before starting long-term or high-dose supplementation. Regular blood tests help identify actual deficiencies and avoid unnecessary intake. Whenever possible, get vitamins from a balanced diet rather than relying on pills. Also read | Your persistent cough be a hidden sign of heart disease; what you need to know Get the latest lifestyle updates on Times of India, along with Happy Independence Day wishes, messages , and quotes !