Oct 6, 2025
Hidden Causes of Vitamin D Deficiency: Beyond Sunlight Exposure

Discover the overlooked reasons for vitamin D deficiency beyond lack of sun. Learn how skin melanin, malabsorption issues, obesity, medications, genetics, and medical conditions sabotage levels. Get science-backed solutions and testing insights to address root causes.

Sep 26, 2025
Vitamin D vs D3: Key Differences, Benefits & Which to Choose

Discover the critical differences between Vitamin D and D3: sources, absorption rates, effectiveness for deficiency, and why D3 is superior for most people. Learn optimal dosages and natural sources.

Sep 26, 2025
Vitamin D vs D3: Key Differences, Benefits & Which to Choose (Science-Backed Guide)

Discover the crucial differences between vitamin D and D3. Learn why D3 is more effective, how to test for deficiency, and science-backed strategies for choosing the right supplement.