University of Arkansas researchers found that vegetables in the Apiaceae family helped protect the gut barrier, reduce inflammatory markers and improve bacterial diversity in mice fed a Western-style diet.
By yourNEWS Media Newsroom
Celery, parsnip and related vegetables may help protect the gut from inflammation caused by a Western-style diet, according to a University of Arkansas study published in the Journal of Nutrition.
Researchers found that mice fed a diet high in fat and sugar showed less intestinal damage when their food was supplemented with vegetables from the Apiaceae family, which includes celery, parsnip, fennel and parsley.
The study adds to growing research suggesting that certain vegetable families may offer specific benefits for gut health because of their fiber, plant compounds and effects on the microbiome.
To test the effect, researchers fed male mice a Total Western Diet designed to resemble the average American dietary pattern. The diet was high in fat and sugar. Some mice received no vegetable supplementation, while others received diets supplemented with either 21% or 42% apiaceous vegetables.
Researchers said those amounts were equivalent to roughly one cup per day for humans when adjusted by caloric intake.
The mice were then exposed to a chemical used in animal research to damage the intestinal lining and induce gut inflammation. The experiment included six treatment groups so researchers could compare vegetable-supplemented mice with controls.
The results showed measurable protection in the mice that received celery, parsnip and related vegetables.
Compared with control mice, the vegetable-supplemented mice had 44% less weight loss, 57% less colon shortening and 59% lower disease activity scores, according to the report.
Researchers also found that the gut mucus layer, which helps shield the intestinal lining from damage, was preserved in the vegetable-supplemented groups. In the control group, that protective layer was nearly absent.
Inflammatory immune cells in the colon lining dropped by 80% among mice receiving vegetable supplementation. Cytokines, signaling proteins associated with inflammation, fell by 35% to 73%.
The study also found that supplementation restored occludin, a tight junction protein that helps maintain the intestinal barrier. A stronger barrier may reduce the likelihood that irritants, bacteria or toxins pass through the gut lining and trigger immune responses.
The microbiome also shifted in a favorable direction.
Mice given apiaceous vegetables showed increases in beneficial bacteria, including Lachnospiraceae, which produce butyrate, a short-chain fatty acid important for colon health. The study also found enrichment of Blautia, a genus linked to anti-inflammatory effects.
At the same time, harmful bacteria that increased after the inflammation trigger were suppressed in the vegetable-supplemented groups.
Researchers attributed the protective effects to several components found in celery, parsnip and related plants. These include bioactive compounds such as falcarinol, apigenin, bergapten and xanthotoxin, along with soluble fibers such as pectin.
Pectin acts as a prebiotic, feeding beneficial bacteria in the gut. Vegetable fibers also add bulk to stool and may support more regular bowel function.
The study suggested that these vegetables helped slow the decline in short-chain fatty acids caused by a Western-style diet. Short-chain fatty acids help nourish colon cells, support the gut lining and regulate inflammation.
The findings are promising but limited.
Researchers used a chemical-induced colitis model, which does not fully replicate naturally occurring gut disease in humans. The study also did not compare celery and parsnip with other vegetable families, making it unclear whether the observed benefits are unique to Apiaceae vegetables or reflect broader benefits of increasing vegetable intake.
Human trials are needed before researchers can confirm whether the same effects occur in people.
University of Arkansas researchers said the results support further study but do not yet justify formal dietary recommendations for treating inflammatory gut conditions.
Still, the study suggests that adding celery, parsnip, fennel or parsley to meals may be a practical way to increase fiber and plant compounds in a diet that otherwise resembles a typical Western pattern.
Simple options include celery with nut butter, roasted parsnip as a side dish, shaved fennel in salads or fresh parsley added to grain bowls, soups and vegetables.
Celery is often treated as a low-calorie snack rather than a meaningful contributor to nutrition, but the study highlights its place within a family of plants that may have underappreciated gut-health value.
The broader takeaway is that even targeted additions to a less-than-perfect diet may influence inflammation, bacterial diversity and gut barrier function.
Researchers emphasized that more evidence is needed, especially in humans, to determine whether one cup of Apiaceae vegetables per day can produce similar benefits outside animal models.
For now, the findings point to celery, parsnip and their botanical relatives as vegetables worth closer attention in the study of diet, inflammation and gut health.
Source: Natural News
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