[custom_adv] Everyone has a unique body odor (BO), which can be pleasant or subtle, but when we think of BO, we usually think of an unpleasant smell. Changes to body odor may be due to puberty, excessive sweating, or poor hygiene. Sudden changes are typically caused by the environment, medications, or foods that you eat. [custom_adv] However, body odor, especially sudden and persistent changes to your normal odor, can sometimes be a sign of an underlying condition. You may also notice a sudden smell from your stool, urine, earwax, or genital discharge. No matter the location, the odor can vary. It can be foul, pungent, fishy, sour, bitter, or even sweet. [custom_adv] The body odor of people between the ages of 26 and 75 was analyzed. The researchers found that 2-Nonenal, which has an unpleasant greasy and grassy odor, was detected only in the participants ages 40 or older. [custom_adv] Sweating helps maintain your body temperature, hydrates your skin and balances your body fluids. There are two types of sweat glands: eccrine glands and apocrine glands. Eccrine glands are located over most of your body. Apocrine glands develop in hairy sections of your body. [custom_adv] Eccrine glands secrete perspiration that is composed primarily of water and salt. Apocrine glands secrete a fatty sweat. The bacterial breakdown of apocrine sweat is what usually causes an odor. [custom_adv] Over-the-counter (OTC) antiperspirants and deodorants are effective cures for most body odor. There are prescription antiperspirants if the OTC products don't work. Antiperspirants contain aluminium-based compounds that temporarily block sweat pores.