Poorly fitting shoes, especially those with pointed toes, can cause bunions, according to the American Academy of Orthopaedic Surgeons (AAOS). Women are much more likely to have bunions than men, according to research published by the Institute for Quality and Efficiency in Health Care in 2018. While wearing tight-fitting shoes can cause or contribute to bunions, it is not the main reason why they form.
The primary cause of bunions is weak connective tissues in your feet. If you have a short Achilles tendon, short calf muscles, or flat feet, you might also be more prone to bunions. Inflammatory diseases, such as rheumatoid arthritis, increase the chances of developing a bunion, according to the AAOS. In some cases, bunions are hereditary as well. They may develop due to the shape and structure of your feet. Your doctor can help diagnose your bunion and recommend the best form of treatment.