Overview What is vitamin D deficiency? Vitamin D deficiency means you don’t have enough vitamin D in your body. It primarily causes issues with your bones and muscles. Vitamin D is an essential vitamin that your body uses for normal bone development and maintenance. 8 Best Vitamins and Supplements for Dry Skin. 1. Vitamin D. Vitamin D is a fat-soluble vitamin that’s critical for many aspects of health, including the health of your skin. Keratinocytes are skin 2. Collagen. Collagen is the most abundant protein in your body and accounts for 75% of your skin’s Vitamin deficiencies that can cause dry skin include vitamins D and A. Deficiencies in niacin, iron, or zinc can also cause dry skin. Learn More: Best At-Home Micronutrient Testing 11 Sources Vitamin D deficiency affects people across the lifespan. Breastfed babies don’t get enough vitamin D from breast milk, so they need to take supplements. As people age, it’s harder for their skin to produce adequate amounts of vitamin D, which may lead to deficiency. vJWRfIT.

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