Eat More Walnuts – the WAHA Study

“Regularly eating walnuts will lower your LDL cholesterol and improve the quality of LDL particles, rendering them less prone to enter the arterial wall and build up atherosclerosis, and this will occur without unwanted weight gain in spite of the high-fat — healthy vegetable fat, though — content of walnuts,” Emilio Ros, MD, PhD, senior author of the Walnuts and Healthy Aging (WAHA) study, said in an interview.

WAHA is a parallel-group, randomized, controlled trial that followed 636 patients over 2 years at centers in Loma Linda, Calif., and Barcelona. They were randomly assigned to either a walnut-free or walnut-supplemented diet, and every 2 months they were underwent nuclear magnetic resonance spectroscopy and recorded their compliance, toleration, medication changes, and body weight.

Walnuts Lowered LDL Cholesterol in Healthy Seniors: WAHA Study – Medscape – Aug 30, 2021. https://www.medscape.com/viewarticle/957523?src=rss#vp_1

The study was funded by the California Walnut Commission.

But don’t let that stop you from eating walnuts.

Walnuts may be good for the gut and help promote heart health

Walnuts may be good for the gut and help promote heart health

In a randomized, controlled trial, researchers found that eating walnuts daily as part of a healthy diet was associated with increases in certain bacteria that can help promote health. Additionally, those changes in gut bacteria were associated with improvements in some risk factors for heart disease.

Journal Reference: Alyssa M Tindall, Christopher J McLimans, Kristina S Petersen, Penny M Kris-Etherton, Regina Lamendella. Walnuts and Vegetable Oils Containing Oleic Acid Differentially Affect the Gut Microbiota and Associations with Cardiovascular Risk Factors: Follow-up of a Randomized, Controlled, Feeding Trial in Adults at Risk for Cardiovascular Disease. The Journal of Nutrition, 2019; DOI: 10.1093/jn/nxz289

RCT but only 42 participants.