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Mikhail Faranov, MD

Mikhail Faranov, MD, is an otolaryngologist (ENT physician) and medical author/editor at Mike's Balance. He writes and reviews ENT and health content and separates published evidence, clinical context, personal observations, and hypotheses. His medical training includes the S. M. Kirov Military Medical Academy and North-Western State Medical University.

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My 25(OH)D rose only modestly while taking 5,000 IU/day, but that does not prove 10,000 IU/day is safe or beneficial. Current guidance sets a 4,000 IU/day adult upper intake level for unsupervised long-term use and does not support routine high-dose supplementation in healthy adults.

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Fluoride toothpaste reduces tooth decay and is generally safe when used as directed. The main practical concern is repeated swallowing by young children, which can increase fluorosis risk. Claims that ordinary toothpaste routinely causes thyroid or melatonin problems are not established.