Blog — Research Notes & Food Deep-Dives
New study summaries, single-food deep dives and seasonal eating guides — every claim traceable to published research, every rating rooted in USDA data. Published by our data editorial team, several times a week.
Seasonal · 2026-09-04
Fall Foods for Constipation: 8 Autumn Picks, Backed by Data
Pears, squash, pumpkin puree and baked sweet potatoes — the autumn produce with real fiber numbers, and the canned traps that look fibrous but are not.
1,475 words · 4 FAQs
Deep dive · 2026-08-31
Why Astronauts Get Constipated — and What It Teaches Us
A 2026 study of 52 astronauts found that slow gut transit starves gut bacteria of fiber. The fix on Earth is the same one NASA is studying for Mars.
1,528 words · 3 FAQs
Deep dive · 2026-08-31
Kiwifruit vs Prunes vs Psyllium: What the Best Evidence Says
Three foods dominate the constipation evidence: kiwifruit, prunes and psyllium. We compare the trials, doses and who each one suits best.
1,539 words · 3 FAQs
News · 2026-08-31
Vinegar for Constipation? A New Japanese Trial Says Maybe
A 2026 randomized trial found a daily vinegar drink increased bowel movements in mild constipation. What it shows, and what it does not.
1,034 words · 2 FAQs
News · 2026-08-31
Gut Bacteria Turn Vegetables Into Blood Pressure Help: Study
A 2026 Cell study found gut microbes convert nutrients from vegetables into compounds that lowered blood pressure in animals. What it means for you.
1,003 words · 2 FAQs
News · 2026-08-31
Morning Coffee and Regularity: What a 39% Risk Reduction Means
Research links morning coffee to significantly lower constipation risk. How it works, how much helps, and where the effect stops.
1,046 words · 2 FAQs
Deep dive · 2026-09-02
Ozempic and Constipation: The 111,545-Person Answer
A 2026 Harvard study of 111,545 adults tracked constipation after starting GLP-1 drugs. Relative risk rose modestly; new cases stayed under 4%.
1,628 words · 4 FAQs
Deep dive · 2026-09-02
Junk Food and Kids' Poop: What a Study of 394 Kids Found
A 2026 study of 394 school-aged children found ultra-processed foods made stools harder — without always causing constipation. What it means.
1,531 words · 4 FAQs
News · 2026-09-02
How Much Fiber Moves the Needle? 40 Trials Give a Number
A 2026 synthesis of 40 randomized trials found each extra gram of daily fiber adds 0.053 bowel movements per week. The math is humbling — and useful.
1,053 words · 3 FAQs
News · 2026-09-02
30 Plants a Week Beats a Probiotic: The 2026 ZOE Trial
A 2026 trial from King's College London and ZOE: a daily 30-plant blend shifted 57 gut bacterial species — a probiotic capsule shifted 4.
1,017 words · 3 FAQs
News · 2026-09-02
Kimchi, Sauerkraut and the Gut: Why Whole Food Beats the Pill
A 2026 Nature Reviews Microbiology review: fermented plant foods deliver live microbes, metabolites, fiber and plant compounds — more than a capsule.
1,020 words · 3 FAQs
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This website is informational only and based on public data from USDA FoodData Central and published nutrition research. It is maintained by the Diet for Constipation data editorial team — not medical professionals. Nothing here is medical advice; consult a qualified healthcare provider about persistent constipation or any health condition.