Biting Your Nails? Here's How It's Secretly Harming Your Health

By: Rahul M | June 07, 2025

Biting your nails might seem like a harmless habit, but something you do out of stress, boredom, or even without thinking

But beneath this seemingly innocent action lies a series of health risks that can affect everything from your teeth to your immune system

Infections Around Nails (Paronychia): Nail biting can damage the skin around the nails, making it easy for bacteria and fungi to enter, leading to painful infections and swelling

Spread Of Germs To Mouth: Your hands carry a lot of germs. Biting your nails transfers bacteria like E. coli and Salmonella from fingers to mouth, increasing the risk of gastrointestinal issues

Tooth Damage: Constant nail biting can cause chipped, cracked, or worn-down teeth. It may also lead to jaw problems due to repeated pressure

Poor Nail Growth & Deformities: Biting damages the nail bed, which can cause abnormal nail growth, ridges, or even permanent nail deformities over time

Mental Health Concerns: Chronic nail biting is often linked to anxiety, stress, or obsessive-compulsive behaviour. It may worsen these conditions or signal underlying emotional distress

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