Usda, Western Human Nutrition Research Center

This completed study examined how diet influences inflammation and metabolism in 393 healthy and obese adults. Researchers measured immune cells, hormones, and other markers after participants ate a high-fat meal. The goal was to better understand the complex interactions between…

This study looked at whether a person's genes (specifically the ALOX5 gene) affect how their body responds to fish oil supplements. Researchers gave 166 healthy African-American adults either fish oil or placebo capsules for 6 weeks. They measured markers of inflammation in the b…

This study looked at how two different nutritionally balanced diets affect insulin levels and other markers of metabolic health in 52 adults who are overweight or at risk for diabetes. Participants followed each diet while maintaining their weight, and researchers measured change…

This completed pilot study collected health and nutrition information from 300 healthy adults living in Northern California. Participants completed an online survey about their stress levels, nut consumption, and bowel habits. The goal was to test and improve study procedures for…

This pilot study looked at whether eating fermented vegetables changes the amount of beneficial bacteria in the gut and how well people tolerate the diet. Twenty-four healthy adults aged 18-65 took part. The goal was to gather data to design a larger study in older adults.

This study looked at whether adding a fiber supplement (inulin) to a low-fiber diet could increase helpful gut bacteria and improve the immune response to a typhoid vaccine. Sixty healthy adults with low fiber intake took either inulin or a placebo for five weeks, and all receive…