Dietary Fiber News and Research

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US children who eat more fruit have less abdominal fat

Research shows that increased fruit consumption is associated with reduced abdominal fat in children, highlighting its importance in obesity prevention.

23 Jun 2025

Can a Japanese diet help with depression? Large study says yes

A large cross-sectional study of 12,499 Japanese workers found that higher adherence to traditional or modified Japanese diets was associated with a lower prevalence of depressive symptoms. The findings suggest that culturally rooted dietary patterns may support mental well-being, especially among educated adults.

18 Jun 2025

Berries pack more fiber and antioxidants than America’s most-eaten fruits

Replacing one daily serving of commonly eaten fruits like apples or bananas with berries significantly boosts nutrient density in USDA dietary patterns. The modeling analysis showed notable gains in anthocyanins, fiber, and vitamins, with only modest cost increases.

16 Jun 2025

‘Junk food’ plant diets raise heart risk even if meat is cut out

Research shows that healthy plant-based diets lower cardiac biomarkers, while unhealthy plant foods raise heart disease risk. Key findings from a large study.

11 Jun 2025

Eating more pulses and vegetables lowers stress by boosting beneficial gut bacteria, study finds

Higher diet quality, especially with more pulses and vegetables, was linked to greater Lachnospira abundance in the gut and lower stress scores among Japanese adults. The relationship appears to be mediated by specific gut bacteria rather than a direct effect of diet on stress.

6 Jun 2025

Back-to-basics, 'not fad' diets beat heart disease and diabetes

This review examines dietary interventions that can improve cardiometabolic health, highlighting the role of whole foods in reducing heart disease and diabetes.

4 Jun 2025

Can AI solve tomorrow’s global food crisis?

Artificial intelligence is poised to revolutionize global food systems by enabling faster, more sustainable innovation, from plant-based alternatives to new product development. However, realizing this potential depends on open data, interdisciplinary collaboration, and realistic expectations about AI’s capabilities.

25 May 2025

Gut bacteria and genes jointly shape obesity risk, review reveals hidden links

Researchers examined the heritability of body mass index (BMI), highlighting that genetics and the gut microbiome both play major roles in obesity risk. The review emphasizes that maternal microbiome transmission and family environment may help explain “missing heritability” beyond known genetic factors.

20 May 2025

Eating kombu daily enhances gut health and heart markers in men

A 12-week randomized trial found that daily intake of boiled kombu (Laminaria japonica) powder reduced body fat and raised adiponectin in Japanese men, while improving blood pressure and gut microbiota in both sexes. No significant effects were seen in women for body fat reduction or adiponectin.

20 May 2025

Acetate and gut bacteria work together to reduce obesity in mice

Researchers led by Hiroshi Ohno at the RIKEN Center for Integrative Medical Sciences (IMS) in Japan have discovered a new way to reduce obesity.

19 May 2025

Midlife carbohydrate quality linked to healthier aging in women

Intakes of dietary fiber, high-quality and total carbohydrates in midlife were favorably linked to healthy aging and other positive health outcomes in older women, according to a new study by researchers from the Jean Mayer USDA Human Nutrition Research Center on Aging (HNRCA) at Tufts University and Harvard T.H. Chan School of Public Health.

16 May 2025

Eating avocado in pregnancy cuts infant food allergy risk by nearly half

Pregnant women who ate avocado were significantly less likely to have children with food allergies at 12 months of age. The association held even after adjusting for maternal diet quality, lifestyle, and perinatal factors in a large Finnish cohort.

8 May 2025

Ultra-processed foods increase risk of anxiety and depression, study shows

A large UK Biobank study linked ultra-processed food (UPF) consumption to increased risks of anxiety, depression, substance use disorder, and other mental health outcomes. A metabolomic signature associated with UPF intake partially mediated these relationships, especially in adults under 60.

5 May 2025

Chitosan clears microplastics from the gut in rats within days

A study in rats found that ingesting chitosan, a dietary fiber from shells, significantly increased the fecal excretion rate and decreased the gut retention time of polyethylene microplastics. This suggests chitosan could potentially help mitigate microplastic accumulation in the digestive system.

24 Apr 2025

Can a plant-based diet help prevent breast cancer?

A case-control study in Iranian women found that higher adherence to a healthy plant-based diet significantly reduces breast cancer risk in postmenopausal women and those with a BMI under 25. In contrast, high intake of unhealthy plant-based foods raised risk in premenopausal women.

22 Apr 2025

High fiber diet helps protect against dangerous gut infections

A study published in the journal Cell Host & Microbe by Brazilian and American researchers suggests that a diet rich in soluble fiber can protect the intestine against pathogenic bacteria.

9 Apr 2025

Eating ultra-processed foods may rewire your brain’s hunger and reward circuits

High intake of ultra-processed foods is linked to adverse metabolic health and microstructural brain changes in regions that control appetite and reward. These effects occur both through obesity-related pathways and independently via inflammation and dyslipidemia.

9 Apr 2025