What vitamin am I lacking for weak nails? A Comprehensive Guide to Nutrient Deficiencies
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5 min read
According to a 1993 study on participants with brittle nails, supplementation with 2.5 mg of biotin per day improved symptoms in 63% of individuals over several months. When you ask, 'what vitamin am I lacking for weak nails?', biotin is a top contender, but other nutritional deficiencies can also manifest through brittle, soft, or splitting nails.
