Eating Pistachios May Help Improve Sleep, Study Suggests
Eating Pistachios May Help You Sleep Better, New Research Suggests
New research suggests pistachios contain natural nutrients that may support better sleep. Discover their sleep benefits and nutritional value.
Pistachios are one of the most popular nuts around the world. Their light green color, slightly sweet taste, and crunchy texture make them a favorite snack for many people. But did you know that these small nuts may also help you get a better night's sleep?
A recent scientific review from the United States suggests that pistachios contain several natural nutrients that may support healthy sleep. Although more research is needed, scientists believe that eating pistachios could be a simple way to support both sleep and overall health.
What Does the New Research Say?
A scientific review involving a researcher from Columbia University in the United States looked at how the nutrients found in pistachios might affect sleep.
The review was published on September 11, 2026, in the scientific journal Nutrition Research Reviews. It was written by Mixon, Pérez-Jiménez, and M-P St-Onge.
The researchers found that pistachios contain several nutrients linked to the body's natural sleep process. These include tryptophan, magnesium, vitamin B6, and a plant-based form of melatonin called phytomelatonin.
However, the researchers also explained that there is not yet enough direct evidence to prove that eating pistachios improves sleep in humans. More studies are needed to confirm the benefits.
How Can Pistachios Support Better Sleep?
Our body has a natural system that helps us know when to sleep and when to wake up. One important part of this system is melatonin, a hormone that helps control our sleep cycle.
Pistachios contain tryptophan, an amino acid that the body uses to produce serotonin. Serotonin helps control mood and is also used to make melatonin.
Vitamin B6 and magnesium, which are also found in pistachios, support these natural processes.
Another interesting fact is that pistachios naturally contain phytomelatonin. This is a form of melatonin found in plants.
Scientists believe that these nutrients may work together to support healthy sleep. Still, eating pistachios does not guarantee that someone will fall asleep faster or sleep longer.
Pistachios Are Also Good for Overall Health
Better sleep is not the only possible benefit of pistachios. These nuts are also packed with nutrients that help the body stay healthy.
A small serving of pistachios, around 28 grams or a handful, provides approximately 160 calories, 6 grams of protein, 3 grams of fiber, 8 grams of carbohydrates, and 13 grams of fat.
Pistachios also contain potassium, phosphorus, copper, manganese, and vitamins B1 and B6.
Protein helps the body build and repair muscles, while fiber supports healthy digestion. Most of the fat in pistachios is unsaturated fat, which is generally considered better for heart health than saturated fat.
Vitamin B6 is especially important because it helps the body use energy from food and supports the nervous system. It also plays a role in normal blood sugar metabolism.
How Many Pistachios Should You Eat?
One important question is how many pistachios a person should eat to improve sleep.
According to the researchers, there is currently no confirmed amount that can be recommended specifically for better sleep.
However, a small handful of unsalted pistachios can be a healthy snack as part of a balanced diet.
It is also important not to eat too many because pistachios contain a considerable number of calories. People with nut allergies should avoid them.
Can Pistachios Replace Sleeping Medicines?
Although pistachios contain nutrients linked to sleep, they should not be considered a replacement for sleeping medicines or medical treatment.
Researchers have pointed out that healthy sleep depends on several factors, including diet, daily habits, stress, and sleeping patterns.
Getting regular exercise, following a consistent bedtime, and avoiding too much caffeine late in the day can also help improve sleep.
Columbia University's Institute of Human Nutrition has also explained that no single food can solve all sleeping problems. A balanced diet and healthy daily routine are more important for long-term sleep health.
Sources:
Nutrition Research Reviews — Pistachio Nutrients and Sleep Health (September 2026)
Columbia University — Could Your Diet Be the Key to Better Sleep?
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