Blood glucose response
Syzygium leaf and bark extracts appear in traditional medicine and in animal studies of glucose metabolism. There is no human research on the fruit, and none of that work supports a claim about eating it.
Insufficient evidence. Not enough human research to say anything useful yet.
1 source
- Effect of tea prepared from leaves of Syzygium jambos on glucose tolerance in nondiabetic subjects.(opens in a new tab)
Randomised controlled trial · Diabetes care · 1990 · PMID 2209336
Deep research mode adds each paper’s own conclusion and stated limitations.