Does Sugar Cause Athlete's Foot? What Diet Can and Can't Do

Does sugar cause athlete's foot? No, eating sugar does not cause athlete's foot. The infection comes from fungi that you pick up from damp floors, shared towels and sweaty shoes. Where sugar does matter is blood sugar: people with diabetes get foot fungus more often, and that link is well documented. This guide separates the diet myths from what actually clears and prevents athlete's foot.

If you have searched for antifungal foods or an antifungal diet, you are not alone. It is one of the most common questions we hear. Here is what the evidence really shows.

Does sugar cause athlete's foot?

Sugar in your diet does not cause athlete's foot, because the infection only starts when fungi reach your skin. Athlete's foot, or tinea pedis, is caused by dermatophytes, the same family of fungi behind ringworm and jock itch. According to Mayo Clinic, these fungi thrive in warm, damp places like sweaty socks, shoes and wet towels, and spread through contact with contaminated floors and surfaces.

That is why the classic risk factors are about environment, not food. Mayo Clinic lists wearing enclosed footwear often, sweating a lot, sharing towels or shoes, and walking barefoot in public showers, pools and locker rooms.

The idea that sugar "feeds" athlete's foot usually comes from the anti-candida movement. Candida is a yeast, and yeasts use sugar to grow in a lab dish. But athlete's foot is usually caused by dermatophytes living on the outer layer of your skin, not by yeast in your gut, and the sugar you eat does not end up between your toes in a way that changes the infection.

Why does high blood sugar make foot fungus more likely?

Persistently high blood sugar, as in diabetes, is linked to more fungal foot infections because it affects circulation, nerves and immune defences. This is the real connection people are picking up on when they ask whether sugar causes athlete's foot.

The research is consistent. In a Turkish study of people with type 2 diabetes, 85 of 600 participants had foot skin and/or nail fungus, compared with 9 of 152 people without diabetes. Another study of 227 people with diabetes found tinea pedis in 26.3% of them and fungal nails in 34.9%.

For people with diabetes, athlete's foot is not just an itch. Mayo Clinic notes that it can sometimes lead to a bacterial infection, and that people with weakened immune systems, such as those with diabetes, may develop a serious skin infection called cellulitis. That is why the advice for diabetes is to see a healthcare professional if you think you have athlete's foot, rather than waiting it out.

Are there antifungal foods that fight foot fungus?

No food has been shown to treat or prevent athlete's foot. Lists of antifungal foods usually include garlic, coconut oil, oregano, ginger and fermented foods, based mostly on laboratory tests where an extract is placed directly on fungi in a dish. Eating those foods is a very different situation from applying an antifungal to infected skin.

The same goes for the popular "candida cleanse" or anti-candida diet. Mayo Clinic explains that this diet removes foods such as sugar, white flour, yeast and cheese, and that feeling better is probably the main benefit, rather than stopping yeast growth. Eating fewer processed foods has health benefits of its own, but that is not the same as treating a fungal infection.

So what is a sensible antifungal diet? Simply a balanced one. Plenty of vegetables, enough protein and fewer ultra-processed snacks support your overall health and, if you have diabetes, help keep your blood sugar steady. Just do not expect your plate to clear the skin on your feet.

Diet vs treatment: what actually works?

Treatment applied to the skin, combined with keeping feet dry, is what clears athlete's foot. Diet plays a supporting role at most, and a meaningful one mainly for people with diabetes.

The NHS notes that athlete's foot does not usually get better on its own and is commonly treated with creams, sprays or powders from a pharmacy. It can also come back, which is why prevention habits matter as much as the treatment itself.

How do you treat and prevent athlete's foot?

Treat the skin directly every day, and remove the warm, damp conditions the fungus needs to survive. A good routine looks like this:

• Wash and dry carefully. Wash your feet daily and dry thoroughly between the toes, the spot where athlete's foot usually starts.
• Treat consistently. Apply your antifungal product every day for as long as the instructions say, and keep going for a while after the itch stops.
• Change socks daily. The American Academy of Dermatology advises changing socks every day, and more often when they get wet.
• Rotate your shoes. Alternating pairs gives each pair time to dry out completely before you wear them again.
• Protect your feet in public. Wear flip flops or shower shoes in gyms, pools, locker rooms and hotel bathrooms.
• Do not share. Keep towels, socks and shoes to yourself, especially if someone at home has athlete's foot.

For the treatment step, our Athlete's Foot Treatment is made for exactly the symptoms people search about: itching, burning and peeling skin between the toes. It is applied directly to the affected skin, which is where the fungus lives, and is designed to calm those symptoms from the very first application. Pair it with the daily habits above so the fungus has nowhere comfortable to return to.

Shop Athlete's Foot Treatment

Pro tip: keep a separate small towel just for your feet and wash it often. It stops the fungus travelling from your toes to the rest of your body, and makes drying between the toes a habit.

When should you see a doctor about athlete's foot?

See a doctor or podiatrist if your rash has not improved after two weeks of over the counter treatment, or straight away if you have diabetes. Mayo Clinic also advises getting help if you notice signs of infection such as swelling, pus or fever.

Frequently asked questions

Can eating too much sugar give you athlete's foot?

No. Athlete's foot is caused by dermatophyte fungi that spread through contact with damp floors, towels, socks and shoes. Eating sweets does not put those fungi on your skin. Persistently high blood sugar, as in poorly controlled diabetes, is linked to more foot fungus, but that is a medical condition, not a dessert habit.

What foods are antifungal?

Garlic, coconut oil, oregano and some spices show antifungal activity in laboratory tests, which is why they appear on antifungal food lists. That does not mean eating them treats a skin infection on your feet. No food has been shown to clear athlete's foot, so treat the affected skin directly instead.

Is there an antifungal diet for athlete's foot?

Not one that is backed by evidence. Anti-candida or antifungal diets usually cut sugar, white flour, yeast and cheese, but research has not shown they treat fungal infections. Eating more vegetables and fewer processed foods is good general advice, yet athlete's foot still needs a topical antifungal and dry feet.

Does diabetes make athlete's foot more likely?

Yes. Several studies find foot skin and nail fungus more often in people with diabetes, likely because of reduced circulation, nerve damage and weaker immune defences. Cracked skin from athlete's foot can let bacteria in, so anyone with diabetes should have a suspected fungal infection checked by a doctor or podiatrist.

Will cutting out sugar make athlete's foot go away faster?

Unlikely on its own. If you have diabetes, keeping your blood sugar in your target range supports healing and helps your body fight infection. Without diabetes, there is no good evidence that skipping sugar speeds recovery. Daily antifungal treatment, clean dry socks and dry shoes do the real work.

Related reading

• The Right Diet to Prevent Foot Fungus
• Athlete's Foot That Won't Go Away: Why Treatment Fails and How to Break the Cycle

Sources

1. Oz Y, Qoraan I, Oz A, Balta I. Prevalence and epidemiology of tinea pedis and toenail onychomycosis and antifungal susceptibility of the causative agents in patients with type 2 diabetes in Turkey. International Journal of Dermatology, 2017. https://pubmed.ncbi.nlm.nih.gov/27667305
2. Akkus G, Evran M, Gungor D, Karakas M, Sert M, Tetiker T. Tinea pedis and onychomycosis frequency in diabetes mellitus patients and diabetic foot ulcers: a cross sectional, observational study. Pakistan Journal of Medical Sciences, 2016. https://pmc.ncbi.nlm.nih.gov/articles/PMC5017097
3. Mayo Clinic. Athlete's foot: Symptoms and causes. Mayo Clinic, 2026. https://www.mayoclinic.org/diseases-conditions/athletes-foot/symptoms-causes/syc-20353841
4. Mayo Clinic. Candida cleanse diet: What does it treat? Mayo Clinic Expert Answers, 2022. https://www.mayoclinic.org/healthy-lifestyle/consumer-health/expert-answers/candida-cleanse/faq-20058174
5. American Academy of Dermatology. How to prevent athlete's foot. AAD. https://www.aad.org/public/diseases/a-z/athletes-foot-prevent
6. NHS. Athlete's foot. NHS Health A to Z. https://www.nhs.uk/conditions/athletes-foot/

Written by Sylke Bommel, founder of Imperial Feet.

Editorial note: the author is a formulator, not a medical practitioner. This article is for general information and is not medical advice.