Biotin also supports keratin production. Foods such as egg yolks, nuts, oats, sweet potatoes, and mushrooms can gradually improve nail thickness and resilience. Iron is another essential nutrient, especially for women over forty. Leafy greens, lentils, chickpeas, seeds, and moderate portions of red meat help prevent weak or spoon shaped nails. Pairing these foods with vitamin C rich produce like citrus or bell peppers improves absorption.
Healthy fats matter too. Omega three sources such as salmon, sardines, flaxseeds, chia seeds, and walnuts keep nails flexible and reduce dryness. Zinc supports repair and cell growth, found in foods like pumpkin seeds, cashews, whole grains, beef, and oysters. Vitamin C from fruits and vegetables strengthens the tissue under the nail and prevents splitting around the edges.
Hydration is often overlooked. As thirst cues weaken with age, dry brittle nails can appear. Cucumbers, zucchini, watermelon, soups, and regular water intake help maintain moisture balance throughout the body, including the nails.