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12 Best Vitamin D3 Supplements of 2025

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Vitamin D is a fat-soluble vitamin, meaning that it dissolves in fats and oils and can be stored in your body for a long time. Two main dietary forms exist: Vitamin D3 (cholecalciferol). Found in some animal foods, like fatty fish and egg yolks. Vitamin D2 (ergocalciferol). Found in some plants, mushrooms, and yeasts. The Global Vitamin D Market size was worth US$ 1.1 billion in 2022 ( R ), and it is estimated to reach a valuation of US$ 1.7 billion by the end of 2028, expanding at an annual compound rate of 7.0% between 2023 and 2028. What is Vitamin D Good For? Vitamin D helps keep you bones strong by aiding in the absorption of calcium and phosphorus. It's involved in maintaining a healthy immune system, mood regulation, heart health, and even weight loss .  What is the Best Form of Vitamin D?  Vitamin D is a fat-soluble vitamin, meaning that it does not dissolve in water and is absorbed best in your bloodstre...

Vitamin K1 vs Vitamin K2: What's the Difference?

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Controlled studies in people observed that vitamin K2 supplements generally improve bone and heart health, while vitamin K1 has no significant benefits for bone and heart health ( Source ). However, vitamin K2 is not available in plants. What is vitamin K and what does it do? Vitamin K is a nutrient that the body needs to stay healthy. It’s important for blood clotting and healthy bones and also has other functions in the body. If you are taking a blood thinner such as warfarin (Coumadin®), it’s very important to get about the same amount of vitamin K each day. How much vitamin K do I need? The amount of vitamin K you need depends on your age and sex. Average daily recommended amounts are listed below in micrograms (mcg). Life Stage Recommended Amount Birth to 6 months 2.0 mcg 7–12 months ...