The most common causes of bunions are improper footwear and structural weakness. Both of these are factors that may cause the foot to unevenly bear the body’s weight and cause an imbalance.
Women tend to be victims of bunions more often than men due to their choice in shoes. Women that wear high heels are more likely to develop a bunion because of the extra pressure and stress that the shoes place on the front of the foot. Combine pressure and tight, closed toe boxes that force the front of the feet and toes into an unnatural position and you have a recipe for a bunion.
Bunions tend to run in families and may be inherited along with structural weakness in the foot. Other causes include diseases like arthritis that may cause the cartilage in the big toe to deteriorate and allow the joint to slip out of its natural position.