Every article opens with the answer and the evidence grade. If the honest answer is "probably not", that's the first line.
Yes, for the narrow thing it was measured on — and the dose on most labels is too low to reproduce it.
The fibre research on fullness is consistent. The effect on weight is smaller than the ads imply.
Lutein and zeaxanthin have the better dataset. Bilberry's is thinner than its reputation.
Small trials, real effects on sleep latency, mostly in people who were low to begin with.
Two large trials disagree. We walk through why, and which better matches your situation.
It helps by lowering stress and improving sleep — not by acting on memory itself.
What the trials found on libido and hormone levels — and what they did not find.
The large prevention trials came back null, and the smaller positive studies haven't replicated.
Our three grades, the criteria behind each, and the things that can't be graded at all.