Fast-growing fingernails can reveal important details about your health. Nails are made of keratin, a protein, and their growth is influenced by diet, metabolism, circulation, and genetics.

Quick nail growth often means your **metabolism is working well**, efficiently delivering nutrients and oxygen to the nail beds. “People who eat balanced diets high in proteins, vitamins… and minerals like zinc and iron tend to have stronger, faster-growing nails.”

**Protein-rich diets** also help. Since nails are mostly protein, foods like eggs, meats, beans, and nuts support their growth. If your nails grow faster than before, it might be due to better eating habits.

**Good blood circulation** ensures your nails get what they need. Faster nail growth can signal that your heart and vessels are healthy—especially encouraging in older adults.

For women, **pregnancy** can boost nail growth due to increased hormones and blood volume. Also, **recovering from illness** can trigger faster growth as the body ramps up healing.

Sometimes it’s simply **genetics**—if your family has fast-growing nails, it may just be in your DNA.

But be cautious. “If they are accompanied by other changes—such as discoloration, brittleness, or ridges—it may be a sign of an underlying issue.”