The One Food Meghan Markle Gave Up For Glowing Skin

Markle typically starts every day with hot water with lemon, a practice endorsed by mbg registered dietitian Jessica Cording. "Lemon water is helpful for moving things through the digestive tract and also stimulating urination, both of which are important parts of that natural detoxification process," she explains.

She follows that with either chia pudding (a favorite of Dr. Terry Wahls) or steel-cut oats with banana and agave. She has a salad for lunch and swears by a green juice in the afternoon. "It's easy to fall into the trap of rushing for a coffee when you hit that 4 p.m. slump," she told Today. "But if I blend some apple, kale, spinach, lemon, and ginger in my Vitamix in the morning and bring it to work, I always find that sipping on that is a much better boost than a cup of espresso."

Giving up gluten. She told delish that she notices the biggest difference in her energy and her skin when she cuts it completely from her diet. "It gets such a bad rap," she explained. "However, when I'm traveling, I won't miss an opportunity to try great pasta. I come back from vacation every year with a food baby, and I've named her Comida. I get to the set and I'm like, 'Hey, Comida's here, and she's kicking.'"

According to mbg doctor Evan Hirsch, M.D., gluten can degrade skin health by causing hormone imbalance and inflammation. "It increases inflammation in the body that causes stress on the adrenal glands (and subsequently the thyroid and gonads) and autoimmunity. This leads to dysregulation of the hypothalamic-pituitary-hormone axis, a decrease in the production of the hormones from the adrenals, thyroid, and gonads due to the stress, and increased autoimmunity to these glands," he explains.