Taking a supplement of 30 grams of “resistant starch” a day – about the amount in two slightly unripe bananas – reduced the risk of multiple forms of cancer in people with a rare genetic condition.
Consuming resistant starch – a dietary fibre found in oatmeal, beans and bananas – reduces the risk of upper gastrointestinal cancers by nearly 50 per cent in people with Lynch syndrome. This is the first time a nutrient has been shown to prevent these cancers in people with the condition.
The nutrient supplement finding is significant because upper gastrointestinal cancers tend to be the deadliest for people with Lynch syndrome, says Matthew Yurgelun at the Dana-Farber Cancer Institute in Boston, Massachusetts, who wasn’t involved in the work.
See: Cancer Prevention with Resistant Starch in Lynch Syndrome Patients in the CAPP2-Randomized Placebo Controlled Trial: Planned 10-Year Follow-up. https://www.capp3.org/media/26287/capr-22-0044_published_paper.pdf
Lynch Syndrome Ireland 