A July 2019 study by Baylor College of Medicine found that, “a high-quality diet is linked to more potentially beneficial bacteria; while a low-quality diet is associated with an increase in potentially harmful bacteria.”

Professor Li Jioa said, “… we focused on dietary patterns as defined by the Healthy Eating Index … and how they relate to the microbiome [the microorganisms in a particular environment] … In a previous study, we found that [the Health Eating Index] is associated with reduced risk of pancreatic cancer."

The study found that “…a good-quality diet … high in fruits, vegetables and whole grains, and low in added sugar, alcoholic beverages and solid fats is associated with higher abundance of beneficial bacteria such as those with anti-inflammatory properties.”