Lyn's research interests focus on nutritional epidemiology and the epidemiology of cardiovascular disease. Specific research projects include studies of dietary intake and cardiovascular disease and its risk factors in adults. Recent projects include the study of dietary intake, metabolomics and the gut microbiome.

Her expertise is including aging, nutrition epidemiology, cardiovascular disease epidemiology, diet assessment, diet patterns, nutrition in older adults, dietary intake and health, fatty acids & CVD.