Smelly armpits (bromhidrosis) are caused by bacteria on your skin breaking down sweat from your apocrine glands (which produce oily sweat in armpits/groin) into foul-smelling compounds, often worsened by genetics, diet (garlic, onions), stress, hygiene, hormones, certain medications, or underlying issues like diabetes or liver/kidney problems, with body hair trapping sweat and bacteria.
Sweating and body odor of the underarms often can be treated with antiperspirants or deodorants that you can buy without a prescription: Antiperspirants. Antiperspirants contain metal salt, such as aluminum, that blocks sweat pores. This reduces the amount of sweat that reaches the skin.
Sour-smelling armpits result from sweat mixing with bacteria on the skin. This condition often affects individuals with hyperhidrosis, mainly in areas such as the hands, feet, and armpits.
Bacterial overgrowth
Your underarms are a playground for bacteria. Even after a thorough wash, some bacteria can stick around and cause odor.
It could be dead skin cells and you might need a good exfoliator. It could be medical, a hormonal imbalance. It could be affected by the food you eat, maybe you have food intolerances that stress your body. Or increased stress due to worrying about smelling that feeds into a stress cycle worsening the smell.
Without enough B12, your metabolism can slow down, leading to more odor-causing byproducts being released through your sweat. Plus, B12 helps maintain healthy skin, which acts as a barrier to bacteria that cause bad smells. You can find B12 in foods like meat, eggs, and dairy, or through supplements.
Kids start to have body odor around the time puberty starts and hormones change. Usually, this happens when females are 8–13 years old, and males are 9–14. But it can also be normal to start puberty earlier or later. Bathing every day, especially after a lot of sweating or in hot weather, can help with body odor.
This could be due to various factors such as diet, stress, hormonal changes, or even the type of bacteria present in your underarms. However, fear not! There are actionable steps you can take to control armpit odor and boost your confidence. Maintaining good hygiene is crucial.
Diabetes can cause sweat to smell sweet, fruity, or like nail polish remover due to high ketone levels from uncontrolled blood sugar (diabetic ketoacidosis or DKA), a serious complication requiring immediate medical attention, often accompanied by excessive thirst, urination, weakness, nausea, or confusion. In some cases, uncontrolled diabetes might also lead to sweat smelling like ammonia, especially with kidney issues, or cause increased sweating.
THE USUAL SUSPECTS: FOODS THAT CAUSE BODY ODOR
The methods outlined make use of basic and widely available ingredients, that you probably already have at home.
Later in life, hormonal shifts—particularly during menopause in women—can also affect body odor. Decreasing estrogen levels in women can alter sweat production and lead to shifts in body odor that may seem stronger or different. Changes in Skin Composition: As we age, our skin's composition changes.
Yes, you can get rid of the underarm smell by bathing regularly. Using antibacterial soaps to scrub the underarms might help with the underarm smell by reducing the number of bacteria on the skin.
Lemon juice: Rub half a lemon directly on your armpits daily to reduce skin pH and make it uninhabitable for bacteria. If you have sensitive skin, dilute the lemon juice with water. Apple cider vinegar: ACV is naturally acidic and antimicrobial, neutralizing the environment and preventing odor-causing bacteria.
Personal hygiene and lifestyle
So, the reason stress sweat smells worse than other sweat is because different glands react to stress than react to heat and exertion. These glands produce a kind of sweat that is full of food for bacteria, and bacterial growth leads to odor.
Certain medications can change your body odor through increased sweat production. Examples include: ADHD medications (amphetamines) Medicines used to treat severe allergic reactions (adrenaline)
Missing B6 or B12 vitamins can affect your body's ability to process and eliminate odor-causing byproducts. These vitamins are involved in metabolism and the breakdown of amino acids. A deficiency can lead to the production of more odor-causing compounds, impacting your body's natural scent.
When Body Odor Might Signal a Health Issue
After a few weeks of consistent use, the adjustment from antiperspirant to natural deodorant should be complete. Of course, the length of time to detox from commercial antiperspirants and deodorants can vary, but usually four weeks is all it takes – for some, the transition is quick and fairly insignificant!
Nonenal production usually starts around the age of 40 and can be exasperated by menopause or other fluctuations in hormones. The frustrating thing about Nonenal is that the smell isn't easily removed, especially from fabrics like shirt collars, sheets, and towels.
Dehydration, supplements, or eating spicy, garlicy or onion-rich food can lead to body odor. But, body odor changes could also be a sign of infection, metabolic issues, liver disease, kidney disease or gum disease.
Some women describe their menopause body odour as smelling like urine, and even cat pee, which could be caused by excess ammonia due to increased amounts of apocrine sweat. Aside from body odour, you may also experience 'phantom smells', such as smoke.