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A new study shows that Vitamin C can substantially improve signs of skin aging. (🧵1/7)
This study came out in December in the Journal of Investigative Dermatology. Subjects were given just 2 sungold kiwifruits per day for 8 weeks. Kiwis are THE BEST dietary source of vitamin C.
Vitamin C is highly concentrated in the skin. Most notably, vitamin C is especially important in the outermost layer of the skin - the epidermic and specifically the stratum corneum. However, most of this vitamin C was NOT in skin cells, it was in the extracellular matrix.
After the 8 weeks, plasma vitamin C levels jumped quite a bit. This corresponded with vitamin C levels increasing substantially within the skin after the kiwis as well.
The kiwis increased skin density by ~50%. The green here represents functional tissue, mainly collagen protein, in the skin. After 8 weeks you can see a clear and robust increase.
Kiwis also improved the rate of skin cell proliferation. Those red dots represent the molecular marker Ki-67, a protein known to be elevated when cells divide. There's more of them after 8 weeks. This indicates that the kiwis increased the multiplication of cells in the epidermis, an important sign of skin vitality and youth. A loss of this process means the skin is aging and deteriorating.
Why are kiwis & vitamin C so good for skin health? Two main reasons: 1. Vitamin C is needed for the hydroxylation reactions that facilitate the production of collagen in the skin. Collagen is the most abundant protein in connective tissue like skin, and a reduction in collagen is seen in aging, skin damage and certain pathological skin diseases. 2. The primary driver of skin aging is oxidative stress - which kills all cells within the skin and also degrades the structural proteins like collagen. Almost anything you can think of that ages the skin (smoke, UV light) does so by causing oxidative stress. Vitamin C is one of the skin's main antioxidants, preventing this process.
This is the vitamin C product we use personally + with clients if you for some reason don't want to eat kiwis or drink orange juice. <a target="_blank" href="https://www.analyzeandoptimize.io/shop#vitC" color="blue">analyzeandoptimize.io/shop#vitC</a>
If you want to get some personalized help from us with ANY of your health goals, we’re taking clients virtually worldwide every day at PRISM. Book a free call here for more: <a target="_blank" href="https://go.prism.miami/consultation" color="blue">go.prism.miami/consultation</a>