fountainIn a prospective cohort study, appearing in JAMA (2010; 303(3): 250-7), 608 patients with heart disease were examined for DHA and EPA (omega-3 fatty acids) levels and cellular aging. Researchers looked at the telomeres of the subjects. Telomeres are crucial to the life of the cell. They keep the ends of the various chromosomes in the cell from accidentally becoming attached to each other. Shortening of the telomeres is a sign of cellular aging. The researchers observed the subjects for five years and found that those with the lowest levels of EPA and DHA experienced the highest rate of telomere shortening and those with the highest levels of DHA and EPA had slower shortening of their telomeres. This may indicate that omega-3 fatty acids may play a role in slowing down cellular aging.