Dr Wendi's Health

Category Archives: Skin

Vitamin D

Vitamin D is a fat-soluble vitamin that has several important functions in our body.  Getting into the winter months, it may be time to think about adding a vitamin D supplement.  Studies show that approximately 40-50% of North Americans and about 1 billion people worldwide are deficient in vitamin D. Vitamin D is primarily made in the stratum basale layer of our skin when we are exposed to UVB sunlight (below I made a diagram of the steps involved in its production). We can get some from consuming liver, eggs, oily fish, mushrooms, and fortified milk but food is only a minor source compared to sun exposure or supplementation. Fat-soluble vitamins can be stored in our liver so there is a supply to draw on for a period of time.  If you had about 10-20 minutes of sun exposure a few days per week during the summer, you likely have…

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skin epidermis

The global cosmetic industry is valued at over 500 billion per year and is expected to reach over 800 billion by 2023. Humans want to look good so we spend a lot of money every year buying products to put on our skin.  The skin is made up of layers, the very top layer we see is the epidermis and it is composed of dead cells (the stratum corneum) that continually slough off and new cells from the lower basale layer continually replace the corneum.  You can see the epidermis layers in this figure from my textbook, notice that only the basale layer is near blood vessels.  We need to be healthy on the inside for the skin to be healthy and for the epidermis to look good. What are the most important factors affecting your skin? Consume nutrients our skin cells need to function and regenerate. Skin health is…

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