Nail fungus is more common among older adults because nails grow more slowly and thicken with aging, making them more susceptible to infection. Nail fungus also tends to affect men more than women and those with a family history of this infection.

However, these factors can increase your risk of developing nail fungus:

Smoking
Perspiring heavily
Working in a humid or moist environment
Wearing socks and shoes that hinder ventilation and don't absorb perspiration
Walking barefoot in damp public places, such as swimming pools, gyms and shower rooms
You're also more likely to develop nail fungus if you have:

A minor skin or nail injury, a damaged nail or another infection
Diabetes, circulation problems or a weakened immune system click here