Current Research and Services
Research programs at the Linus Pauling Institute investigate the roles that vitamins and essential minerals (micronutrients) and chemicals from plants (phytochemicals) play in human aging, immune function, and chronic disease. The goal of these studies is to understand the mechanisms by which diet, micronutrients, and dietary supplements affect disease initiation and progression and can be used in the prevention or treatment of human diseases, thereby enhancing lifespan and healthspan.
For details on specific research projects, see the individual pages of the Institute's Principal Investigators.
Clinical Trials
The Linus Pauling Institute has several ongoing clinical trials. Please check here for trials that are currently recruiting participants.
Older Adults Wanted for Walnut Study (Corvallis, Oregon)
We want to know how consuming 1.5 oz. of walnuts (about 0.5 cup) every day for 12 weeks may impact learning and memory and the gut microbiome.
We are looking for volunteers aged 55 years and older who do not have any memory or learning disorders and do not take medications that affect focus and concentration. Additional screening criteria apply.
This study involves giving blood, urine, and fecal samples, taking learning and memory tests, 5 visits to OSU (Corvallis), and lasts 14 weeks. You will receive $300 upon completion.
For more information and to see if you are eligible to participate, visit: https://lpi.pub/WalnutStudy
Contact: [email protected] or 541-737-3594
Study Title: Effect of Walnuts on Cognitive Function and Gut Microbiome in Older Adults 
Principal Investigator: Emily Ho, PhD
Professional Services
The Linus Pauling Institute laboratories can also provide professional research services.