Vitamin C

Vitamin C is required for the synthesis of collagen, a protein that gives form, strength, and integrity to numerous tissues and serves as the foundation for fingernails, hair, and teeth. Brittle nails and delayed nail development might occur from a vitamin C deficit.

Vitamin C is an important vitamin that your body cannot make. Men need 90 mg per day, while women need 75 mg. While citrus fruits like oranges, strawberries, and kiwi are believed to be the finest providers of vitamin C, bell peppers, green vegetables, and tomatoes are also abundant in this nutrient. Red bell peppers, in fact, have more than twice the vitamin C content of an orange.