Biting Your Nails? This Common Habit Can Trigger Infections, Dental Damage and Anxiety

Health experts warn that nail biting may lead to stomach infections, gum problems, fungal growth and rising stress levels if left unchecked

By :  Amit Singh
Update: 2026-02-11 04:36 GMT

Many people develop the habit of biting their nails when they're nervous, stressed, or bored. Often, people dismiss it as a minor habit, but this habit can gradually take a toll on their health. Importantly, nail biting not only spoils the beauty of their hands but also has an impact on the body.

According to health experts, dirt, bacteria, and germs easily accumulate under their nails. When you bite your nails, these harmful bacteria reach your mouth and stomach. If this habit persists for a long time, it can lead to serious problems that can be difficult to treat.

Health Problems Caused by Nail Biting

Stomach Problems May Worsen

Bacteria and fungus present under your nails can spread infection to your stomach, causing gas, stomach pain, diarrhea, and food poisoning. This problem can be even more serious in people with poor digestion.

Damage to Teeth and Gum

Constant nail biting can weaken the enamel of teeth. This can lead to faster tooth wear and increased sensitivity. It can also cause swelling, pain, and bleeding of the gums.

Risk for Infection and Fungal Infection

Nail biting causes small cuts in the skin, allowing bacteria to enter the body. This can lead to paronychia (infection around the nail), swelling, and pus formation. Sometimes, this infection can even become serious.

Increased Mental Stress and Anxiety

Nail biting is often associated with mental stress, anxiety, and stress. Instead of reducing stress, this habit can exacerbate it. Gradually, it becomes an uncontrolled behavior, affecting self-confidence.

Impact on Hand Beauty and Self-Confidence

Chickened nails look unattractive. This diminishes the beauty of hands and sometimes makes people shy away from showing their hands in public. This habit can harm both personality and confidence.

How to get rid of this habit?

Keep your nails short, practice yoga and meditation to reduce stress, and use a bitter-tasting nail polish if necessary. If the habit is more serious, it's best to seek expert advice.

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