Consume two kiwifruits one hour before sleep to improve sleep quality thanks to their supply of serotonin, a precursor to melatonin.

noli's read

The idea of consuming two kiwifruits one hour before bedtime to promote a peaceful night is indeed based on real evidence. A pioneering clinical study conducted by Lin et al. in 2011 showed that after four weeks of this ritual, adults reported falling asleep faster and having more restorative sleep. Similar results were observed in a 2023 clinical trial led by Doherty on elite athletes, confirming gains in sleep efficiency. However, the explanation involving kiwi serotonin is scientifically improbable, as this molecule from food cannot cross the blood-brain barrier to be converted into melatonin. The observed benefits more likely stem from the kiwi's richness in antioxidants, folate, or its positive effects on digestive comfort. Carla Valette is, moreover, correct to humorously emphasize the beneficial effect of kiwi on transit, a very solid and widely documented digestive asset.

the sources

1. 1Lin HH et al. 2011