Aging and Lifestyle Factors
As we age, nail growth slows, and they naturally become thinner and less flexible. Longer nails or frequent use of gels, acrylics, and extensions add mechanical stress. You might notice more ridges or a general fragility that wasn’t there before.
Lifestyle elements like nail biting or picking can create micro-trauma. The good news? These are often reversible with mindful changes.
Nutritional Clues Hidden in Your Nails
Nails reflect nutritional status because they require steady nutrient supply for strong keratin formation. Deficiencies can manifest as increased brittleness.
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Iron and Potential Anemia
Low iron levels are linked to fragile nails, sometimes with a spoon-shaped appearance. Studies associate iron deficiency with nail changes, particularly in women. If accompanied by fatigue, it may be worth exploring further with a healthcare provider.
Biotin and B Vitamins
Biotin (vitamin B7) supports keratin infrastructure. Some small studies suggest daily biotin supplementation (around 2.5 mg) can increase nail thickness and firmness in people with brittle nails, though evidence varies and not everyone responds the same way.
Other Key Nutrients
Zinc, protein, and omega-3 fatty acids contribute to nail integrity. A varied diet helps fill these gaps naturally.
But wait… Should you rush to supplements? Not necessarily—excess intake can cause issues, so professional guidance is key.
Underlying Health Conditions to Consider
While less common, brittle nails can signal systemic factors. Research connects them to certain conditions, though external causes remain more typical.
Thyroid Issues
Hypothyroidism (underactive thyroid) often leads to dry, brittle nails alongside fatigue, weight changes, or feeling cold. Addressing thyroid health may help nails improve.
Anemia and Circulation Concerns
Iron deficiency anemia or conditions like Raynaud’s (reduced blood flow to fingers) can contribute to fragility.
Other possibilities include skin conditions like psoriasis or eczema, fungal infections, or side effects from certain medications. Most cases, however, tie back to moisture imbalance or habits rather than serious issues.
