40. Avocados
Collagen makes up around a third of the protein in your body, and it’s one of the essential building blocks of your skin. Eating collagen-rich foods, then, can ensure your skin, hair and nails stay healthy and strong. As well as plentiful quantities of healthy fats, avocados contain vitamin C – a vital component of collagen. Moreover, they’re full of useful compounds for protecting your skin from sun damage.
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