Synopsis

Source of validity: Traditional
Rating (out of 5): 2

Green algae have a history of use in traditional medicine, particularly in some Asian cultures, for supporting digestive health, including ulcers. While not as commonly cited as other herbal remedies, certain species of green algae—such as Chlorella and Ulva (sea lettuce)—have been included in folk medicinal practices due to their general nutritive, anti-inflammatory, and wound-healing properties. The rationale often centers on their richness in vitamins, minerals, antioxidants, and bioactive compounds that may help modulate inflammation and promote mucosal healing.

However, there is limited direct scientific evidence specifically validating green algae for the treatment or support of gastric or duodenal ulcers. Most available studies on green algae focus on their general antioxidant and immunomodulatory effects, rather than on ulcer healing specifically. Some animal studies suggest that extracts of certain green algae may reduce gastric lesion formation or promote gastrointestinal mucosal repair, likely due to their antioxidant content, but these findings are preliminary and not yet confirmed in human trials. Thus, while traditional support exists, scientific validation is weak, and green algae are not widely recognized or recommended in clinical guidelines for ulcer management.

In summary, the use of green algae for ulcers is primarily based on tradition, with limited and low-quality scientific evidence to support its effectiveness for this specific condition.

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