tl;dr They don't know.
I wish scientists would be more open about how little they understand digestion and nutrition, particularly on an individual level. Advice gets presented as an if-then, when it's not.
I wish scientists would be more open about how little they understand digestion and nutrition, particularly on an individual level. Advice gets presented as an if-then, when it's not.
The reason you think “they don’t know” is a media ecosystem that hypes weak minor contrary results that usually disappear in further research and an entrenched trillion dollar food industry that spreads misinformation to get you to continue eating the foods they sell that have the highest markups, such as processed foods, meat and dairy.