Better Sleep

Glycine and sleep have become an interesting area of nutrition research. Glycine is an amino acid involved in nervous-system signaling and body-temperature regulation, and a few small human studies suggest that taking glycine before bed may improve some aspects of sleep and next-day alertness. Most of the sleep studies have used 3 grams of glycine … Read more

Vitamin E and sleep may be connected, but the current evidence is still limited. A randomized controlled trial in postmenopausal women with chronic insomnia found that one month of mixed-tocopherol supplementation improved self-reported sleep quality. A newer trial also found an improvement in self-reported sleep disturbance with tocotrienols, another form of vitamin E. However, these … Read more

If you are looking for nutrients that may support better sleep, zinc and sleep are worth exploring. Zinc is involved in many processes in the body, including brain function, cell signaling, and normal nervous-system activity. Some studies have found a possible link between zinc status and sleep, but researchers are still trying to understand how … Read more

Vitamin A is essential for vision, immunity, growth, reproduction and normal cell function, but whether vitamin A can directly improve sleep is still unclear. Research suggests that vitamin A-derived retinoic acid is involved in biological pathways related to sleep and circadian regulation, including brain activity during sleep. However, most of this evidence comes from experimental … Read more