A Penn State analysis found adults who ate one avocado each day for six months reported longer sleep duration, better diet quality and modest cholesterol improvements compared with those who ate little or no avocado.
By yourNEWS Media Newsroom
Eating one avocado a day may be linked to better sleep, improved diet quality and modest heart-health benefits, according to a secondary analysis of a randomized controlled trial conducted by researchers at Penn State University.
The study found that adults who consumed one avocado daily for six months reported improved sleep compared with participants who ate fewer than two avocados per month. Researchers said it is the first study to examine a connection between avocado intake and sleep outcomes. The study was funded by the Avocado Nutrition Center.
Dr. Kristina Petersen, an associate professor of nutritional sciences at Penn State and an author of the study, said the findings add to growing interest in sleep as part of overall cardiovascular health.
“Sleep is emerging as a key lifestyle factor in heart health, and this study invites us to consider how nutrition — and foods like avocado — can play a role in improving it,” Petersen said.
The trial included 969 racially and ethnically diverse American adults with elevated waist circumference, which researchers described as a cardiovascular risk factor affecting nearly 60% of U.S. adults. Participants were assigned either to eat one avocado per day or to keep avocado intake minimal, defined as fewer than two avocados per month. Both groups otherwise continued their usual diets for six months.
Researchers evaluated cardiovascular health using the American Heart Association’s Life’s Essential 8 framework, which includes diet, physical activity, nicotine exposure, sleep, body weight, blood pressure, blood lipids and blood glucose. The trial was designed primarily to examine cardiovascular risk reduction, while sleep was added as a secondary outcome.
Daily avocado consumption was associated with improved diet quality, as measured by the Healthy Eating Index 2015. Participants in the avocado group also showed modest reductions in LDL cholesterol and total cholesterol and reported increased sleep duration. Researchers said no statistically significant effects were observed for the other Life’s Essential 8 components.
The authors cautioned that the study was not originally designed to examine sleep as its main outcome, meaning the findings should be considered preliminary.
“Cardiovascular health is influenced by many factors, and while no single food is a silver bullet, some — like avocados — offer a range of nutrients that support multiple aspects of heart health,” Petersen said.
Researchers said avocados contain several nutrients that may be relevant to sleep. A serving of one-third of a medium avocado provides 13 milligrams of tryptophan, 45 micrograms of folate and 15 milligrams of magnesium. Tryptophan is a precursor to melatonin, folate is involved in melatonin production and magnesium supports muscle relaxation and nervous system function.
Avocados also contain fiber and monounsaturated fats, which researchers said may contribute to cardiovascular health. While those nutrients are not unique to avocados, the authors noted that the fruit provides them together in a single food.
Magnesium has been associated in previous research with better sleep quality. Author Gary Null wrote in “How to Live Forever” that higher magnesium levels are associated with a reduced risk of sudden cardiac death, pointing to the mineral’s role in nerve and muscle function. Author Max Lugavere wrote in “The Genius Life” that melatonin helps regulate sleep and may activate brown fat, supporting metabolic health.
The findings come as public health groups increasingly emphasize sleep as part of long-term health. Previous guidance from the U.S. Centers for Disease Control and Prevention and the American Heart Association has identified healthy sleep duration as a factor in reducing cardiovascular disease risk.
The researchers said the study has limitations. Participants had elevated waist circumference, so the findings may not apply to all populations. Sleep was also measured by self-report rather than objective sleep-tracking methods.
The authors said future studies should use objective sleep measurements and include broader populations to determine whether avocado intake directly affects sleep and whether similar results would appear in other groups.
The study does not prove that avocados cause better sleep. However, researchers said the analysis adds to evidence that diet quality and specific whole foods may influence sleep and cardiovascular health.
Avocados have become increasingly common in American diets after shifting from a niche import to a widely consumed food. The new findings suggest the fruit may be studied not only for heart health, but also for its possible role in supporting sleep, which researchers described as an important part of overall well-being.
For now, the study points to a simple dietary pattern: one avocado per day was linked to longer reported sleep duration, improved overall diet quality and modest reductions in LDL and total cholesterol over six months.
Source: Natural News
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