Supplement School
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Vegans and Nutritional Deficiencies: What You Need to Know
A vegan diet can offer many benefits, but it may also increase the risk of certain nutritional deficiencies. Learn which nutrients vegans commonly lack, how to obtain them, and how to support balanced plant-based nutrition.
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Taking Vitamin D? Here's Why You Need K2, Too.
Vitamin D3 helps your body absorb calcium, but without vitamin K2, that calcium may not be optimally utilized. Learn how D3 and K2 work together to support bone and cardiovascular health.
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Can Vitamins Reverse Gray Hair?
Can vitamins really reverse gray hair? While nutrient deficiencies and stress may influence when hair turns gray, scientific evidence shows that supplements alone are unlikely to restore natural hair color. Here’s what research actually says about gray hair and aging.
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Can Vitamin D Cause Constipation? (Answered!)
Can vitamin D cause constipation? While vitamin D is essential for bone and immune health, excessive supplementation may disrupt calcium balance and contribute to digestive discomfort. Here’s what research and clinical observations suggest.
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Are Vitamin D Supplements Safe? (Answered!)
Vitamin D supplements are safe when taken as directed. Learn who may need them, how much to take, possible side effects, and what to avoid combining with vitamin D.
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Are Vitamins D and D3 the Same
Vitamin D and D3 are often used interchangeably, but they’re not exactly the same. Learn the key differences between vitamin D2 and D3, how each one works in the body, and which form may be more effective at raising vitamin D levels, plus dosage guidance, interactions, and what to consider before choosing a supplement.
