It's not that simple for most folks because, as I said, it seems to be a spectrum of intolerance and doesn't manifest as some step function.
It took a while for my wife to zero in on pasta and bread as one source of her bloating and gassiness (lactose being another). She grew up eating plenty of pasta, bread, and lactose. But cutting it out has helped reduce digestive discomfort now in her early 40's.
It took a while for my wife to zero in on pasta and bread as one source of her bloating and gassiness (lactose being another). She grew up eating plenty of pasta, bread, and lactose. But cutting it out has helped reduce digestive discomfort now in her early 40's.