What Your Fingernails Reveal About Your Overall Health

2.Split or Cracked Nails

Split nails may result from chemical exposure, fungal infections, or hypothyroidism. Symptoms like weight gain or fatigue could point to thyroid issues. Deficiencies in biotin, protein, or iron can also weaken nails. Protecting hands, moisturizing, and eating nutrient-rich foods can help. Nail strengtheners and keeping nails at a moderate length may reduce splitting and cracking.