Comparing the Dandruff vs. Healthy Scalp Microbiome


Around half of the adult population worldwide is affected by the condition known as dandruff (Soares et al. 2016). Dandruff is characterized by small white flakes that are shed from the scalp, which often end up in a person’s hair or on their shoulders. Dandruff can cause intense itchiness of the scalp. Having visible dandruff flakes can lead to social embarrassment, due to the stigma that dandruff is caused by poor personal hygiene (e.g., not washing your hair enough). This is not true, however. It is not known what the exact cause of dandruff is, but Malassezia yeasts, specifically an imbalance/overabundance of them, are/have been suspected to play a role in its development (Wang et al. 2015). Malassezia is a fungal genus, and it is normal for fungi belonging to it to live on human skin (Soares et al. 2016), along with other species of fungi and bacteria, like Propionibacterium acnes and Staphylococcus epidermidis (Clavaud et al. 2013). In 2018, researchers in India conducted a study on the scalps of 140 Indian women to learn more about what kinds of microbes (including bacteria and fungi) were present on dandruff scalps vs. healthy scalps (Saxena et al. 2018). Continue reading “Comparing the Dandruff vs. Healthy Scalp Microbiome”

Fixing itchy scalps could be as easy as balancing bacterial communities


Microbes are everywhere. They live in our backyards, on our pets, in our homes and even on and inside of us! Microbes are the bacteria, fungi and viruses that exist in a particular environment, including the human body, soil, plants and the kitchen counter (Marchesi & Ravel, 2015). Our first experience with microbes is usually at home, where we are taught to wash our hands to prevent us from getting sick. “You can’t eat without washing,’ your aunt might say, “there are germs all over your hands!’ Your aunt is right. For every human cell in our body, there is a microbe cell to match it (Sender et al., 2016). However not all of these microbes are harmful.

Continue reading “Fixing itchy scalps could be as easy as balancing bacterial communities”