This Supermarket Herb Moved Memory, Anxiety and Sleep Scores
A humble supermarket herb just posted some surprisingly broad results in a randomized, double-blind trial. In 68 university students, 1 g/day of rosemary for a month beat placebo on self-reported memory, anxiety, depression and most sleep measures. Only sleep latency and sleep duration failed to budge. But every outcome was a questionnaire, the study ran at a single center, and the abstract gives no effect sizes. Here is what the trial actually found, what it can't tell us, and how to try rosemary sensibly if you're curious.
400 mg of Chamomile Extract Improved Sleep in 4 Weeks, and the Effect Lasted
Chamomile tea is the classic wind-down drink. Apigenin, one of chamomile's best-known compounds, has become a staple of "sleep stacks" in biohacking circles. A 2017 randomized trial in Complementary Therapies in Medicine tested a more concentrated version of the idea. It gave older adults 400 mg of chamomile extract a day for four weeks and tracked their sleep quality afterward.