Expert profile
Dr. Tom Biernacki
Podiatrist and foot surgeon
Podiatry; general nutrition and supplement education
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30 minAnalysed
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About the expert
Focus: General nutrition and supplement education, outside his podiatry specialty
Tom Biernacki is a board-certified podiatrist and foot surgeon who runs a large YouTube channel covering foot health and general nutrition topics such as magnesium, vitamin D, and vitamin K2. His nutrition content sits outside his clinical specialty, and his channel carries heavy affiliate marketing.
Expert discussions with Dr. Tom Biernacki
Should I take calcium for my bones, or vitamin K2 and D3?
The simple answer: calcium and vitamin D are the established nutrients for bone health, and whether you need supplements depends on your diet, your vitamin D level and your medical history, with food-first calcium preferred. Vitamin K is also part of bone biology. It helps activate proteins involved in bone mineralization and in limiting unwanted calcification of blood vessels. But there is not yet strong evidence that adding extra K2 prevents fractures or heart disease in most people.