Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Green banana (unripe banana) is increasingly recognized for its potential benefits in gastrointestinal health, including acid indigestion (dyspepsia). While traditional use of banana in general for soothing the stomach is well-known in various cultures, recent scientific studies have investigated the properties of green banana specifically. Green bananas are high in resistant starch and dietary fiber, which act as prebiotics, fostering a healthy gut microbiome. More importantly for acid indigestion, green bananas contain bioactive compounds—such as flavonoids and leucocyanidin—that have demonstrated gastroprotective effects in animal and some human studies.

Several small clinical trials and experimental studies (e.g., Bhatia & Malik, 1977; Goel et al., 1986) have shown that extracts from green banana can enhance mucosal defense in the stomach, reduce gastric acidity, and promote healing of gastric mucosa. These effects are attributed to increased mucus production and strengthening of the mucosal barrier, which can alleviate symptoms of acid indigestion and help prevent ulcers. However, most of these studies are either small-scale or preclinical, and well-powered randomized controlled trials in humans are limited.

In summary, there is moderate scientific evidence (rating: 3) supporting the use of green banana for acid indigestion, primarily based on its bioactive compounds and their protective effects on the gastric mucosa. While traditional use exists, the rating here is based on scientific validation, though more robust research is needed for definitive clinical recommendations.

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