07 Dec 2018 --- Older adults who consumed hazelnuts for a few months significantly improved their levels of two key, underconsumed micronutrients, according to research from Oregon State University. The small-scale study, partly funded by the Hazelnut Marketing Board of Oregon, saw 32 people age 55 and older eat about 57 grams of hazelnuts daily for 16 weeks. This resulted in increased blood concentrations of magnesium and elevated urinary levels of a breakdown product of alpha tocopherol, commonly known as vitamin E.