Brittle, splitting, or fragile nails are common, and they can happen for simple reasons such as dryness or repeated exposure to water and chemicals. Sometimes, however, nail changes can be a clue that something else is going on.
Possible reasons for brittle or fragile nails
- Dryness and frequent exposure to water
- Repeated wetting and drying, harsh soaps, detergents, or cleaning chemicals can weaken nails.
- Nutrient deficiencies
- Low levels of certain nutrients may affect nail strength, including:
- Iron (especially if there is also fatigue, pale skin, or shortness of breath)
- Protein (nails are made largely of keratin)
- Zinc or other nutrients in some cases
- Low levels of certain nutrients may affect nail strength, including:
- Thyroid problems
- An underactive or overactive thyroid can sometimes cause changes in nails, hair, skin, energy levels, or weight.
- Aging
- Nails often become thinner and drier with age.
- Fungal or skin conditions
- Fungal infections, psoriasis, eczema, or other conditions can cause thick, brittle, discolored, or distorted nails.
- Certain medications or medical treatments
- Some medicines and treatments can affect nail growth and strength.
Ways to protect your nails
- Use moisturizer on nails and cuticles regularly.
- Wear gloves when using cleaning products or soaking hands.
- Avoid excessive use of harsh nail polish removers.
- Keep nails trimmed and avoid aggressive filing.
- Eat enough protein and a balanced diet.
Consider medical advice if you notice:
- Sudden major nail changes
- Nails separating from the skin
- Dark streaks that are new or changing
- Significant color changes
- Nail changes along with unexplained fatigue, weight changes, or other symptoms
If you describe what is happening (splitting, ridges, peeling, spoon-shaped nails, discoloration, or brittleness) and your age, I can help narrow down possible causes.
