Foods That Help Strengthen Brittle Nails After 40, Improve Growth, Reduce Splitting, Support Keratin Production, Boost Hydration, and Restore Healthy Shine Through Proper Nutrition, Balanced Vitamins, and Simple Daily Eating Habits That Support Long-Term Nail and Overall Wellness

Protein is the primary building block of nails, which are made largely of keratin. As protein synthesis declines with age, insufficient intake can lead to brittle, weak nails. Including high-quality protein sources such as eggs, fish, poultry, dairy, beans, and lentils helps support steady keratin production and promotes stronger nail growth over time.