Pistachios linked to better sleep in new report
SingTao · 1 SOURCESabout 2 hours ago2 MIN
Summary
A SingTao report says recent research suggests pistachios may help relieve insomnia, offering a food-based alternative for people wary of melatonin pills and their side effects. The report says pistachios stand out among common nuts for their natural melatonin content and also provide tryptophan, vitamin B6 and magnesium, which are involved in the body's production of melatonin. It cites clinical and dietary studies indicating that comparable intakes were associated with longer sleep time, shorter time to fall asleep and improved sleep quality. The report also says pistachios may support sleep through gut fermentation products and polyphenol metabolites that affect brain signalling related to sleep regulation
Key Points
- The report says a 28-gram serving of pistachios contains 71 milligrams of tryptophan, about 20% of the daily requirement for a 70-kilogram adult
- One serving also provides about 0.5 milligrams of vitamin B6, close to 40% of the recommended daily intake, plus 31 milligrams of magnesium
- A clinical trial involving people aged 55 to 75 used two daily servings of tryptophan-enriched cereal for one week, each containing 60 milligrams of tryptophan
- Smart-band monitoring in that trial found significantly longer total sleep time, shorter sleep-onset time and a large rise in urinary melatonin metabolites
- The report says pistachios contain 18.7 micrograms of plant melatonin, within the 1.25 to 85 microgram range cited in tomato and tart cherry juice studies
Why It Matters
For Hong Kong readers dealing with short-term sleep problems, the report points to a familiar snack food as a possible dietary aid rather than a medicine-first approach. It also underlines that sleep-related nutrition is not just about melatonin itself, but about the wider mix of tryptophan, vitamin B6, magnesium, fibre and gut-related effects described in the research cited