Brittle nails

Overview

Brittle nails are nails that split, crack, peel, or break easily. They may feel thin, weak, or soft.

Yes, brittle nails are a very common condition that affects many people.

Brittle nails can affect people of any age, but they are more common in adults, especially women and older adults.

Symptoms

Common symptoms

• Splitting or cracking of the nail edge
• Peeling of the nail surface into layers
• Soft or thin nails that bend easily
• Vertical ridges or roughness on the nail

Symptoms in children

• Similar splitting or peeling, though less common
• Nails may appear flaky or have white spots

Symptoms in older adults

• Increased dryness and brittleness
• More prominent vertical ridges
• Nails may become thicker or more fragile with age

Causes

Main causes

• Frequent wetting and drying of the hands (like washing dishes, hand washing)
• Aging – nails naturally become drier and more brittle over time
• Low humidity or dry indoor air
• Nutritional deficiencies, especially low iron, biotin, or protein
• Underlying medical conditions such as thyroid disease, psoriasis, or fungal infection

Risk factors

• Frequent hand washing or use of harsh soaps
• Exposure to chemicals (nail polish removers, cleaning products)
• Living in a cold, dry climate
• Being over 60 years old
• Having a condition that affects circulation or hormone levels

When to see a doctor

See a doctor urgently if:

• If you have signs of infection around the nail (redness, swelling, pus, pain)
• If a nail separates from the nail bed with severe pain or injury

Book a routine appointment if:

• If your nails remain brittle despite trying self-care for several weeks
• If you notice other symptoms like unusual tiredness, weight changes, or hair loss
• If your nails change colour or shape suddenly

Diagnosis

A doctor will look at your nails and ask about your health, habits, and any other symptoms you may have.

Tests that may be done

• Usually no tests are needed.
• If the doctor suspects a deficiency or condition, they may order a blood test to check iron, thyroid function, or other factors.

What to expect at your appointment

The examination is quick and painless. Your doctor will discuss possible causes and recommend simple steps to strengthen your nails or treat any underlying issue.

Treatment

Treatment focuses on protecting the nails, keeping them moisturized, and addressing any underlying health problem that may be causing the brittleness.

Self-care at home

• Keep nails short and filed smooth to prevent snagging.
• Use a moisturizing cream or oil on your nails and cuticles after washing your hands.
• Wear gloves when washing dishes, cleaning, or using harsh chemicals.
• Avoid using nail polish removers that contain acetone.
• Eat a balanced diet with enough protein, iron, and B vitamins.

Medical treatments

If a medical condition like an underactive thyroid, psoriasis, or a fungal infection is causing your brittle nails, your doctor will treat that condition. They may also recommend a medicated nail cream or a talk about taking a biotin supplement – always check with a doctor before starting any supplement.

When is surgery considered?

Surgery is not used for brittle nails.

Living with this condition

Brittle nails are manageable. With good nail care and moisturizing, most people see improvement within a few weeks.

Lifestyle tips

• Moisturize your nails and hands every day, especially after contact with water.
• Keep nails trimmed and filed – shorter nails are less likely to break.
• Avoid using your nails as tools (like opening cans or scratching).

Diet and exercise

Eating a balanced diet rich in protein, iron (from lean meat, beans, leafy greens), zinc, and B vitamins can help strengthen nails. Staying hydrated also helps. Exercise is not directly linked but overall health supports nail health.

Mental health and emotional wellbeing

Brittle nails can be frustrating or affect your confidence. If you feel self-conscious or worried, talk to your doctor. They can offer reassurance and help you find a solution. If you experience distress, speaking to a mental health professional may also help.

Prevention

You can reduce your chances of developing brittle nails by keeping your nails moisturized, avoiding harsh chemicals, and wearing gloves when your hands are in water for a long time. Eating a healthy diet also helps.

Vaccines

Not applicable.

Screening programmes

Not applicable.

Complications

If left untreated

• Nails may become more split or cracked, increasing the risk of catching on things and tearing.
• Cracks in the nail can allow bacteria or fungi to enter, leading to infection.

Long-term outlook

Most brittle nails improve with simple self-care and time. If an underlying medical condition is the cause, treating that condition often resolves the nail problem. With patience and good habits, you can have healthier nails.

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