1When digestion goes wrong there are usually two things to look at rather than one: something you are eating that does not suit you, and a body too braced to digest properly. Checking only one door tends to leave you stuck.
Digestion mostly happens when your body believes it is safe. If you eat every meal with your shoulders up round your ears, that alone can show up as cramping, bloating or a stomach that never quite settles. Food reactions then add their own load on top. Which is why slowing the meal down and questioning the food often need to happen together.
Islamic evidence
Who provides them with food to ward off hunger, safety to ward off fear (Quran 106:4). Two provisions are named side by side, food and safety, and a body needs both before it can eat well.
“who provides them with food to ward off hunger, safety to ward off fear”
Qur'an 106:4
Psychological evidence
Reviews of Mediterranean style eating summarise links to physical and mental health together rather than as two separate stories, which fits the way gut symptoms and mood tend to travel as a pair. This is review level evidence about an overall pattern of eating, not a test of any single food. It supports looking at the whole picture rather than hunting for one culprit.
Ventriglio A, Sancassiani F, Contu MP, Latorre M, Di Salvatore M, Fornaro M, Bhugra D. (2020). Clinical practice and epidemiology in mental health : CP & EMH · doi
Review detail
Why it works. Digestion runs on the rest side of the nervous system, so a body braced for trouble puts it on hold.
When not to. Persistent digestive symptoms, particularly with weight loss or bleeding, need a medical assessment first.