November 12, 2026 — To help you live better and longer, our healthspan initiative offers research-backed insights for healthier living into how you eat, sleep, move and connect with others.
Healthy eating doesn’t have to feel like a chore. Some of the most helpful foods for your body are also the most enjoyable: a bowl of berries and yogurt, a tray of roasted vegetables, or a Thanksgiving table full of good dishes and good company. With the holidays around the corner, now is a good time to look at what’s on your plate and what it does for you.
This piece covers gut health basics, common myths, foods grouped by what they do for your body and easy ways to incorporate helpful choices into your daily meals.
Gut health basics
Your gut is home to trillions of bacteria, collectively called the gut microbiome. These microbes play a key role in digestion, nutrient absorption and immune health. A varied diet keeps your gut microbiome diverse as you age.
Why fiber matters more as the years go on
Fiber fuels those trillions of microbes, and its role goes well beyond keeping you regular. According to a Mayo Clinic gastroenterologist, eating enough fiber supports gut, heart, immune and metabolic health, which can lower cholesterol and blood pressure and improve blood sugar control.
Eating a variety of fiber-rich foods gives you a variety of fiber types. Fiber- and polyphenol-rich foods also feed beneficial bacteria, which support the gut barrier and immune function.
A quick vocabulary note: Prebiotics are plant fibers that feed beneficial bacteria, and garlic, leeks and onions are among the richest sources. Probiotic foods, such as yogurt and kefir, supply live bacteria. You can get both from your plate, no supplements required.
A simple way to think about the rest:
- Foods that provide benefits: Whole grains, vegetables, fruits, nuts and fish are all tied to lower inflammation, though researchers say more long-term studies are needed.
- Foods to enjoy in moderation: Ultra-processed foods and added sugars may disrupt your gut microbiome balance. Research is still developing. Think “less often” rather than “never.”
Myth vs. Fact
Myth: All bacteria are harmful.
Fact: Many gut bacteria are helpful. They support digestion, nutrient absorption and immune health.
Myth: Detoxes or cleanses reset your gut.
Fact: A search of medical literature turns up almost no high-quality evidence that detox diets benefit health. Your liver and kidneys already handle detoxification.
Myth: Probiotics alone can fix digestive issues.
Fact: Overall eating patterns matter most. The foods you eat every day, especially fiber- and polyphenol-rich ones, shape your gut microbiome too.
What’s on your plate, and what it’s for
Knowing why a food is good for you can make it more fun to eat. Here are a few everyday favorites, grouped by what they do for your body.
- Berries, oats, whole grains, vegetables, beans and lentils provide fiber and polyphenols that feed beneficial bacteria.
- Plain yogurt, kefir, kimchi and sauerkraut are fermented foods that may increase microbial diversity.
- Garlic and onions are prebiotic powerhouses that nourish good bacteria.
A recipe to try
Want to put it all on one plate? HumanGood’s culinary team created a bowl that brings several of these foods together.
Miso-Ginger Salmon + Ancient Grain Bowl
Ingredients:
Salmon: 1½ lb skinless salmon (4 fillets), 3 Tbsp white miso, 2 Tbsp low-sodium tamari, 1 Tbsp + 2 tsp each grated ginger and rice vinegar, 2¼ tsp maple syrup, 1½ tsp sesame oil, 1¼ tsp grated garlic
Grains: 1½ cups cooked quinoa, 1½ cups cooked brown rice or whole-grain couscous, ¾ cup cooked chickpeas, 2 Tbsp olive oil, 1½ Tbsp lemon juice, 2 Tbsp each chopped parsley and sliced scallion
Vegetables: 3 cups broccolini, 2 cups sliced carrots, 1½ cups sliced red bell pepper, 2 Tbsp olive oil, ¾ tsp turmeric, ½ tsp cumin, ¾ tsp salt, ¼ tsp pepper
Sauce: ⅔ cup plain Greek yogurt, 3 Tbsp + 1 tsp tahini, 1½ Tbsp lemon juice, 1 tsp grated ginger, ½ tsp turmeric, 1½ tsp honey, ¼ tsp salt, 2–3 Tbsp water
To top: ¼ cup + 1 Tbsp toasted walnuts, ¼ cup toasted pumpkin seeds, ¼ cup fresh parsley or cilantro, lemon
Serves 4
Salmon: Marinate four skinless fillets (5–6 oz. each) in white miso, low-sodium tamari, fresh ginger, rice vinegar, maple syrup, sesame oil and garlic for 30 minutes. Roast at 375°F until the thickest part reaches 145°–150°F. Go easy on browning, because the marinade can turn bitter if it chars.
Grain base: Toss warm cooked quinoa, brown rice (or whole-grain couscous) and chickpeas with olive oil, lemon juice, parsley and scallion.
Vegetables: Toss broccolini, carrots and red bell pepper with olive oil, turmeric, cumin, salt and pepper. Roast at 400°F until caramelized and tender.
Sauce: Whisk plain Greek yogurt, tahini, lemon juice, ginger, turmeric, honey and salt. Thin with a little water until spoonable.
Build it: Layer grains, salmon and vegetables. Top with sauce, toasted walnuts, pumpkin seeds, fresh herbs and a squeeze of lemon. Go light on the sauce.
You can make this recipe your own with a simple formula:
Grain + Protein + Vegetable + Sauce + Texture + Fresh Finish
Swap in chicken, tofu, beans or lentils for the salmon, and use whatever vegetables you have on hand.
Easy ways to start
You don’t need to overhaul all of your meals right now. Try one or two of these little changes, instead:
- Add one fiber-rich food a day. Berries, oats, roasted vegetables, beans and lentils all feed beneficial bacteria.
- Try one fermented food. Plain yogurt or sauerkraut is an easy place to start. Build up slowly so your digestion can adjust.
- Swap one refined or ultra-processed item for a whole-food version. Try whole-grain bread instead of white, brown rice instead of white rice or plain oatmeal with berries instead of sweetened cereal.
- Eat fish, walnuts and olive oil more often. They’re linked to both brain and heart health.
- Drink water throughout the day. Fluids help fiber do its job. Read more in How Hydration Keeps You Healthy.
- Bring a fiber-rich side to holiday gatherings. Roasted vegetables or a lentil salad are easy ways to share something that nourishes.
- Keep it budget-friendly. Canned or dried beans and lentils, frozen vegetables and rolled oats work just as well as pricier options.
Parting advice
With the holidays approaching, think of your next shared meal as a chance to nourish your gut and your relationships all at once. Small swaps add up for gradually increasing your fiber intake, and none of our suggestions require a kitchen overhaul.
Before making any major dietary changes, check with a healthcare provider or dietitian, especially if you take certain medications, have a digestive condition or follow a restricted diet. Chatting with a professional can also help if you’d like to develop a personalized plan.
Expect more healthspan tips in the months to come!