But what is the cause of this problem?

The warm, moist environment inside shoes especially athletic shoes—promotes bacterial growth on the feet. The interaction between your perspiration and the bacteria that thrive in your shoes and socks generates the odor. So any attempt to reduce foot odor has to address both your sweating and your footwear. The bacteria that are often found in foot odor are usually corynebacterium and micrococcus species. Fortunately, foot odor can usually be controlled with simple measures. So here are some of them:

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