What causes dandruff, and how do you get rid of it? | Thomas L. Dawson

Malassezia is a yeast that lives on human scalps, causing dandruff in about half the population. It thrives in oily environments, consuming saturated fats from sebum and leaving unsaturated fats, which disrupt the skin barrier and cause inflammation. This leads to rapid skin cell turnover and visible flakes. Antifungal treatments are effective, but the exact reasons why some people are more susceptible to dandruff remain unclear. Research is ongoing to understand genetic predispositions and the role of the immune system in dandruff formation.

What is Malassezia and where does it primarily reside?

• A fungus that grows on the feet

• A virus that affects the respiratory system

• A type of yeast that lives on the scalp

• A type of bacteria that lives in the intestines

Why does Malassezia prefer the scalp as its habitat?

• Because it is the driest part of the body

• Due to the presence of sebum, which it consumes

• Because it is exposed to sunlight

• Due to the high temperature of the scalp

How does Malassezia contribute to the formation of dandruff?

• By leaving unsaturated fats that disrupt the skin barrier

• By increasing the production of sebum

• By consuming all types of fatty acids in sebum

• By directly causing hair loss

What is the most effective current treatment for dandruff?

• Applying moisturizing creams

• Using antifungal shampoos

• Taking oral antibiotics

• Using hair conditioners

What are scientists investigating about the relationship between Malassezia and dandruff?

• Whether Malassezia can be used to treat other skin conditions

• If Malassezia can be used in food production

• How Malassezia affects hair color

• If people with dandruff have a genetic predisposition