Most of us have experienced that uncomfortable moment when body odor shows up at the worst time.
But what’s really behind smelly armpits—and what can you actually do when your usual deodorant fails?
It’s Not the Sweat That Smells

Believe it or not, your sweat is naturally odorless. It’s the bacteria on your skin that break down sweat and release that unpleasant odor.
The Type of Sweat Glands Matters

You have two kinds of sweat glands: eccrine and apocrine. The latter are found in your armpits and are the main cause of body odor when they interact with skin bacteria.
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Puberty Is When It Begins

Apocrine glands become active during puberty, which is why body odor usually becomes noticeable in the teenage years.
What You Eat Plays a Role

Spicy foods, alcohol, and certain nutritional deficiencies can all alter your body’s scent by changing the composition of your sweat.
Wash Smarter, Not Just More

Daily showers help, but using an antibacterial soap and drying thoroughly under the arms is key to reducing odor-causing bacteria.
Know the Difference: Deodorant vs. Antiperspirant

Deodorant masks odor but doesn’t stop sweat. Antiperspirant blocks sweat glands to reduce both moisture and odor.
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Shaving Can Make a Big Difference

Hair can trap bacteria and sweat, making odor worse. Shaving or waxing the area can make it easier to keep clean—and smell fresh.
Stress Sweat Smells Worse

When you’re stressed, your body produces more sweat from apocrine glands. Managing stress may reduce this odor-related response.
When Sweat Is a Medical Issue

If you sweat excessively and nothing helps, you might have hyperhidrosis. This condition causes overactive sweat glands.
Advanced Treatments Are Available

If regular products don’t work, options like Botox injections, laser therapy, or even surgery may help reduce sweating and odor long-term.
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This Article Is Based on Information From Healthline
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