Does apigenin help you sleep better?

People who eat more apigenin through their diet sleep slightly better. That emerged from an observational study of nearly 2,000 Italian adults. But this is an association, not proof that apigenin causally improves sleep. Moreover, the association disappeared entirely in people who were overweight or obese.

In mouse research, the combination of apigenin with magnesium did show a clear effect: sleep duration increased by 32 to 44 percent, depending on the model. The combination worked better than either substance alone. Whether this also works in humans has not been studied. Mouse results do not translate to humans nearly as often as one might hope.

How apigenin might act on sleep has been studied in cells and mice. In cultured brain cells, it inhibits receptors that normally regulate arousal or sleep, with a net effect of reduced brain activity. In mice, a particular inflammatory substance in the brain simultaneously decreased. These are possible leads, but not proof that the same mechanism operates in humans.

A serious practical problem is that apigenin barely dissolves in water. As a result, the body absorbs it poorly. Researchers have developed a more soluble variant, but it is not available as a supplement. Ordinary apigenin supplements run into this problem.

Clinical research in humans is entirely lacking. There are no randomised studies that directly test apigenin supplementation and sleep in humans. Anyone considering taking apigenin as a sleep supplement is therefore buying a product without clinical evidence that it works.