On a regular basis, we are asked if tight shoes or wearing shoes too small can cause foot problems. 
Chinese Bound Feet Problems
Dr Gibson has always said that shoe size will not cause foot problems, but will make problems you have a tendency for worse.  In saying that, however, significant shoe size will cause problems.  The best example of this is strapping of the feet in China to make the feet smaller.  Severe problems exist in the feet in these cases.

Shoe size, therefore, can cause similar problems if not correctly fitted to the feet.  Even slightly tighter shoes can predispose a foot to bunion, neuromas, hammertoes, injury to nails, corns and calluses and other foor or ankle problems. 

Our recommendation is to have a properly fitted shoe that is appropriate for whatever activity you will be participating in.

Brandt R Gibson, DPM
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Podiatrist, Neuropathy Doctor, Father of 11 and Founder of Mountain West Foot & Ankle Institute