Why do my feet stink?

Why do my feet stink? I can have new shoes, new socks, clean clean feet scrubbed really good, and by the end of the day, they stink, even if I'm just sittin around the house...

The main thing that feeds foot smell is sweat. With more than 250,000 sweat glands each, your feet are among the most perspiring parts of the body. In one day, each foot can produce more than a pint of sweat! Sweat is basically just salt and water, though, so it doesn't have a distinctive smell of its own. The smell is actually caused by bacteria on our skin that eats the sweat and excretes waste that has a strong odor. It's perfectly normal to have bacteria on your skin, and it doesn't ordinarily produce a noticeable smell, but sweat attracts bacteria and gives them a whole lot to feed on.

Of course we sweat all over -- our hands have a comparable number of sweat glands, for example -- and most of the rest of our body doesn't particularly stink (the armpits being a notable exception. See How Sweat Works for details.) So what's different about our feet? The answer is our socks and shoes. The sweat our feet excrete can't easily escape into the air like the sweat our hands excretes -- it all collects on our skin and in our socks. The bacteria love this dark, damp feast and have a sort of feeding frenzy. When you take off your shoes, the smell that hits you is all the bacteria excretion that's collected on your feet and in your socks and shoes.

The main reason some people's feet (or more precisely, some people's socks and shoes) smell worse than other people's is that some people sweat more than other people. This is just one of the many variable physiological qualities of human beings. This is also why sometimes your feet smell much worse than at other times -- it all has to do with how much you sweat.

So, since foot odor is caused by bacteria digesting sweat, there are two main ways to reduce the stink. You can:
decrease the amount of bacteria on your feet
decrease the amount of sweat that collects on your feet and in your shoes
Reducing the level of bacteria is really a matter of cleanliness. To control the bacteria population on you feet, you should:
wash your feet with strong anti-bacterial soap
wear clean socks
don't wear the same shoes everyday - give a pair of shoes 24 hours or more to air out before wearing them again
To reduce the amount of sweat that collects in your shoes, you should:
wear well-ventilated shoes instead of very constrictive shoes, such as boots
always wear socks, preferably made of cotton or other absorbent materials that absorb a lot of the sweat so the bacteria can't feed on it
change your socks a few times a day
buy some absorbent Odor-Eater type shoe inserts
apply an antiperspirant to your feet
If your foot odor is really bad and these solutions don't help much, then you should see a doctor. There are a number of prescription drugs that can treat serious foot odor, some by killing bacteria and some by reducing foot sweat.

maybe you have athlete's foot

Sounds like you may have some sort of fungus. I had a boyfriend that had that problem - he had to get some kind of perscription from the Doctor and it went away right away. There was nothing he could do about it from the outside (washing, new socks, etc).

ok ill make it short its either your feet so get that checked out or its your shoes get new shoes!

yea mine stink even if I wear sandals or flip flops.. within half a day after my morning shower, or sometimes they smell by morning, even though they've been aired out all night since my night shower... Seems impossible, and I couldn't imagine my feet sweating a lot in flip flops or at night because at home I keep the air at 70 degrees and don't wear shoes.. So a fungus or athletes foot may be the answer?