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Andie Kalifer shares how whole foods nourish your good gut bacteria and support both physical and mental well-being.
The best whole foods for gut health are simple ones: vegetables, fruits and other minimally processed foods that feed the helpful bacteria living in your gut. In this video, holistic nutritionist Andie Kalifer explains why that matters, which foods tip the balance the other way, and why she sees your gut and your mental health as closely linked.
Key takeaways
- Aim for a nutrient-rich diet that feeds "all the good gut bacteria."
- Vegetables, fruits and whole foods feed the good bacteria.
- Sugar, alcohol and refined carbs feed the bad bacteria.
- When bad bacteria outnumber good, Andie says, issues can show up in both gut health and mental health, "because they're in constant communication."
What Andie Kalifer says
Andie frames eating as a way "to nourish and flourish the body," and her starting point is the gut. The goal, she says, is "a nutrient-rich diet that is feeding all the good gut bacteria." In practice, that means "vegetables and fruits and whole foods."
She contrasts those with foods that work against you: "sugar and alcohol and refined carbs feed bad bacteria." Her focus is balance. When there's more bad bacteria than good, she explains, that's when problems appear, "not only gut health, but our mental health too," because the gut and the mind are always talking to each other.
How quickly does food change your gut?
Faster than many people expect. In a study published in Nature, short-term diets made entirely of plant foods or entirely of animal foods quickly changed the makeup and activity of people's gut bacteria (David et al., Nature). In other words, your gut responds to what you eat now, not just to what you ate years ago.
Fermented foods may help too. In a small 17-week randomized study of healthy adults at Stanford, a diet high in fermented foods steadily increased the diversity of gut bacteria and lowered markers of inflammation (Wastyk et al., Cell).
A gut-friendly diet supports your overall well-being, but food is not a treatment for depression, anxiety or other mental health conditions. If you're struggling, talk with a doctor or therapist. If you have a digestive condition, check with your doctor before making big changes to how you eat.
Simple ways to feed your gut
Build meals around plants: vegetables, fruits, beans, lentils, whole grains, nuts and seeds. Add a fermented food like plain yogurt, kefir, sauerkraut or kimchi a few times a week. Then cut back gradually on the sugar, alcohol and refined carbs Andie mentions, rather than all at once. For more on the food and mood link, read how your diet affects mental health and mood.
Video transcript
Transcript (lightly edited for reading):
When we think of how to eat to nourish and flourish the body, we want to think of a nutrient-rich diet that is feeding all the good gut bacteria. So healthy foods such as vegetables and fruits and whole foods feed the good bacteria. But in contrast, sugar and alcohol and refined carbs feed bad bacteria. And when there's more bad bacteria than good bacteria, this is when we see issues with not only gut health, but our mental health too, because they're in constant communication.
Common questions
What are the top 5 foods for gut health?
Good everyday picks include vegetables, fruits, beans and lentils, whole grains, and fermented foods like plain yogurt or kefir. Variety matters more than any single food, since different plants feed different bacteria.
What are the 7 signs of an unhealthy gut?
There's no official list of seven, but commonly mentioned signs include bloating, gas, constipation, diarrhea, heartburn, nausea and stomach pain. Ongoing symptoms deserve a check-in with a doctor. Andie covers this in Poor Gut, Poor Mood? Top Digestive Issues to Know.
What is the 7 day gut reset?
It's a popular term, not a medical program, and plans vary widely. A week of eating more plants and fermented foods and less sugar and alcohol is a reasonable start, but lasting change comes from habits you keep. You don't need cleanses or expensive supplements to begin.
About the expert: Andie Kalifer is a Toronto-based holistic nutritionist and certified nutritional practitioner trained at the Institute of Holistic Nutrition. Her work focuses on digestive health and stress.
