You see why I go on about plastics and chemicals? All this micromanaging of diet, e.g. FODMAP, may not be as effective as we think.

Source: The Guardian

Microplastic pollution has contaminated the entire planet, from the summit of Mount Everest to the deepest oceans. People were already known to consume the tiny particles via food and water as well as breathing them in.
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The scientists found that people who tended to drink bottled water or eat takeaway food had about double the concentration of microplastics in their stools.
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Diet and environmental factors can trigger or exacerbate IBD, which includes Crohn’s disease and ulcerative colitis. “In recent years, the prevalence of IBD has sharply increased in developing countries in Asia,” said the researchers from Nanjing University in China. “It is estimated that there will be 1.5 million IBD patients in China by 2025 which will cause a serious disease burden.”

Study:
Analysis of Microplastics in Human Feces Reveals a Correlation between Fecal Microplastics and Inflammatory Bowel Disease Status, Environmental Science and Technology, 22 December 2021

People with degrees in public health study disease burdens. The plastic problem (related: the chemical problem) should be in the foreground of their study.

And … I will say this again. And again and again and again. Filtering our water or trying to avoid eating from a plastic container or engaging in other personal avoidance behavior is not the answer. The plastics will just continue polluting the environment (where do all those contaminated filters go?). We end up ingesting them in other ways … breathing, eating prepared foods, dairy and other animal foods where they bioaccumulate. The answer is to stop producing plastics!

Sunoco is building a pipeline, Mariner East 2, that spans my state, to carry highly volatile gas liquids to a Delaware River port so they may be sent to Europe where they will be used in the manufacture of plastics. My Democratic governor approved this. It has been lucrative for PA, in permits and fines. Money. It always comes back to money.

FBI Now Investigating The Way In Which Pennsylvania Approved Mariner East Pipeline, The Philadelphia Inquirer, November 2019