University-wide Navigation
CAREERS

What is the Gut Microbiome?

  • The gut microbiome is comprised of microorganisms such as bacteria, fungi and viruses that are distributed throughout the gastrointestinal (GI) tract.
  • Ongoing research suggests that the gut microbiome impacts various aspects of human health, including:
    • Digestion and nutrient absorption
    • Immune system support
    • Mental health (often referred to as the gut-brain axis)
    • Disease risk, such as diabetes, cardiovascular disease, some cancers, digestive disorders and autoimmune disorders

Eubiosis vs Dysbiosis

  • Eubiosis means there is a balanced microbiome with a healthy diversity of bacteria.
  • Dysbiosis means there is an unbalanced microbiome with too few good bacteria, too many bad bacteria and/or lack of bacterial diversity.

Foods that Promote Eubiosis

Prebiotics

  • Vegetables: artichokes, asparagus, carrots, garlic, leeks, onions
  • Fruits: apples, bananas (especially green), citrus fruits
  • Grains: barley, oats, whole grains
  • Legumes: beans and lentils

Probiotics

  • Yogurt with live active cultures
  • Fermented foods: kefir, kimchi, kombucha, miso, unpasteurized raw pickles or sauerkraut

Polyphenols

  • Fruits: apples, blueberries, cherries, grapes, pears, strawberries
  • Vegetables: broccoli, Brussels sprouts, cabbage, cauliflower, tomatoes
  • Spices: ginger, red pepper flakes, turmeric
  • Beverages: coffee, green tea
  • Other: dark chocolate, peanuts, soy products

Omega-3 fatty acids

  • Fatty fish: anchovies, herring, mackerel, salmon, sardines, tuna
  • Nuts and seeds: chia, flax, hemp, walnuts

Foods that Promote Dysiosis

  • Foods and drinks with high amounts of added sugar
  • Foods with high amounts of added sodium
  • Fried foods
  • Ultra-processed foods
  • Non-nutritive sweeteners
  • Alcohol
prebiotics probiotics postbiotics