Hair, Nail, and Skin Problems
These are made up of proteins like elastin, collagen, and keratin. When your body can’t make them, you could have brittle or thinning hair, dry and flaky skin, and deep ridges on your fingernails. Your diet isn’t the only possible cause, of course, but it’s something to consider.
Weakness and Fatigue
Research shows that just a week of not eating enough protein can affect the muscles responsible for your posture and movement, especially if you’re 55 or older. And over time, a lack of protein can make you lose muscle mass, which in turn cuts your strength, makes it harder to keep your balance, and slows your metabolism. It can also lead to anemia, when your cells don’t get enough oxygen, which makes you tired.
