Dr. Nasim Kalhor warns ill-fitting shoes can trigger toenail fungus risk

Dr. Nasim Kalhor says fall footwear can do more than cause discomfort: tight, short or poorly fitted shoes can traumatize toenails and create conditions that help fungus take hold. The warning comes as people switch back to loafers, boots and other close-toed shoes.

Why it matters: - Toe and nail damage from everyday shoes can create an opening for fungal infection. - Fall footwear changes can make people overlook pressure, friction and other warning signs. - Simple fit checks and shoe rotation may help reduce risk before problems worsen.

What happened: - Dr. Nasim Kalhor, co-founder of at-home fungal care brand Dr. AntiFungus, warned that “shoe trauma” can contribute to toenail fungus. - The warning focuses on repeated pressure, rubbing and impact from shoes that are too tight, too short or poorly fitted. - The message comes as people return to loafers, boots and other close-toed shoes for fall.

The details: - Pressure points can form when toes keep hitting the front of shoes, causing repeated trauma to toenails. - Cramped toes can create ongoing friction and pressure when shoes squeeze the foot. - Nail changes such as bruising, discoloration, thickening, lifting or other visible shifts should not be ignored. - Old, worn footwear may hold sweat and moisture from months of use, which can help fungus persist. - Rotating shoes and letting pairs dry between wears can reduce dampness inside footwear. - Dr. Kalhor said the right fit matters for both comfort and foot health. - Dr. Kalhor said shoes are in direct contact with toenails every day.

Between the lines: - The message broadens the usual view of fungal nail risk beyond pools, gyms, public showers and beaches. - The practical takeaway is that routine footwear choices can matter as much as obvious exposure sources. - The fall shoe switch becomes a built-in reminder to inspect both shoes and toenails.

What's next: - Dr. AntiFungus is directing people to learn more online and follow the brand on Instagram and YouTube at @DrAntiFungus. - The company is also offering contact information for media or interview requests through Trent & Company. - Kalhor’s broader work continues to center on fungal, foot and nail care products and education.

The bottom line: - If shoes are too tight, too short or worn too long, they can do more than hurt comfort. They can help set up the conditions that let toenail fungus start and spread.