Other longer - term studies, such as the 5 - year COcoa Supplement and Multivitamin Outcomes Study (COSMOS) of 18,000 men and women, are now underway to investigate the health potential of flavanols on a much larger scale.
The effects of relatively long - term ingestion of cocoaflavanols (ranging from 5 days up to 3 months) has generally been investigated in elderly individuals.