An April 2021 study by the University of British Columbia, Vancouver said, 

"We recently showed that overgrowth of a type of gut yeast called Pichia kudriavzevii in newborns in Ecuador is associated with an increased risk of asthma," 

"In this study, we wanted to see if we could replicate these findings in children from an industrialised setting and identify how fungi of the gut microbiota affect the development of the immune system."

"Our findings show that there is a critical window in early life where disruptions in the gut microbiota caused by Pichia kudriavzevii affect the development of the immune system and increase the risk and severity of asthma later in life,"

"Immune responses to gut microbe disruptions early in life have long-term consequences for diseases of the immune system later in life," 

"Our study adds to our understanding of microbiota-associated asthma and suggests that inhibiting yeast overgrowth with [short-chain fatty acids] in early life could be an effective approach to preventing this condition."