TED-ED: What causes body odor? - Mel Rosenberg

Body odor is a complex phenomenon influenced by genetics, age, diet, and hygiene. It primarily results from the interaction between sweat secretions and bacteria on the skin. Eccrine glands secrete water and salt, while apocrine glands produce proteins and fats, which bacteria convert into odorous compounds. Factors like genetics, diet, and stress can affect body odor intensity. While washing helps, deodorants and antiperspirants are more effective in managing odor. Scientists are exploring the potential social and communicative roles of body odor.

What are the two main components needed to produce body odor?

• Eccrine and apocrine glands

• Armpit secretions and bacteria

• Proteins and fats

• Salt and water

Which type of sweat gland is primarily responsible for body odor?

• Sebaceous glands

• Endocrine glands

• Apocrine glands

• Eccrine glands

What type of chemical compounds contribute to the onion-like smell of body odor?

• Fatty acids

• Carboxylic acids

• Sulfur-containing chemicals

• Amino acids

How can adrenaline affect body odor?

• It decreases the amount of sweat produced

• It increases the ratio of eccrine to apocrine sweat

• It increases the ratio of apocrine to eccrine sweat

• It has no effect on body odor

What is one proposed positive function of body odor according to some researchers?

• Repelling predators

• Cementing social bonds

• Improving digestion

• Enhancing memory