Sweat smells like vinegar because of propionic acid produced in the ducts of sebacious glands. This acid is a byproduct of amino acids that are broken down by a bacterium that lives in these ducts, according to Medical News Today.Know More
The human skin provides a favorable environment for the growth of a variety of microorganisms. Its grooves, folds, moisture and dark areas, allow certain bacterium, fungi and even mites to live on the surface of human bodies, according to the National Center for Biotechnology Information. Propionibacterium acnes is one these commensal organisms, and it's responsible for the production of ingredients that make sweat smell like vinegar. In certain conditions, this bacterium becomes pathogenic and plays an important role in the development of acne. Another bacterium that lives on the skin is Staphylococcus epidermidis, which gives sweat a strong cheesy smell because of its production of isovaleric acid.
Many people use deodorants or antiperspirants to eliminate the strong smell of sweat, according to Medical News Today. Deodorants help eliminate smells by making the environment too acidic for the bacteria as well as by masking already existing smells with fragrance. Antiperspirants reduce smells by preventing the action of sweating. More invasive therapies involve injections of Botulinum toxin into sweat glands, paralyzing the muscles responsible for the excretion of sweat.Learn more about Nutrition & Diets
Sweat glands are positioned deep inside the skin, and their primarily function is temperature regulation. The two types of sweat glands are the apocrine and eccrine sweat glands.Full Answer >
Sweat contains propionic acid, which smells of vinegar. The acid is formed when propionibacteria that live in the ducts of sebaceous glands of adolescent and adult humans break down amino acids.Full Answer >
Blocked salivary ducts, bacterial infections, some viral infections, cysts, and benign or malignant tumors cause the parotid glands to swell, states WebMD. The parotid glands are salivary glands inside of the cheeks, and swelling most often occurs when there are problems with the salivary duct in the mouth.Full Answer >
According to Central Virginia Community College, endocrine glands secrete hormones into their internal environment and lack ducts. By contrast, exocrine glands secrete substances, such as wax, saliva and enzymes, into their external environment via ducts. The University of Leeds explains that both types of glands are comprised of secretory epithelial cells. During the course of development, some exocrine glands lose their ducts and become endocrine glands.Full Answer >