Supplementing with docosahexaenoic acid (DHA) can improve memory and learning function in weeks, research suggests. DHA is a type of omega-3 fatty acid derived from fish oil. An encouraging body of evidence suggests that upping your intake of DHA brings cognitive benefits.An important study in the literature examined the role DHA might play in ameliorating age-related memory decline.Researchers recruited a total of 485 healthy older adults with …