Omega-3 fatty acid DHA improves memory and reaction times

DHA (docosahexaenoic acid) is one of the most important polyunsaturated fatty acids in the omega-3 class. The body naturally produces only very small amounts of DHA and depends on food for this essential fatty acid. Fatty saltwater fish is a particularly rich source of DHA. DHA is incorporated (among others) in the brain cell membranes, where it increases the permeability of the membrane and boosts the excitation conduction and transfer of signals. Deficiencies, which are widespread among the population, have irrevocable repercussions on mental functioning, which was also demonstrated by new research at the Massey University in New Zealand.  

Purpose of the research
Scientists investigated whether a DHA supplement boosts brain function in healthy young adults with a low DHA status. One hundred and seventy-six people aged from 18 to 45 years were monitored in a randomised placebo-controlled double-blind study which lasted for six months. Half of the participants consumed 1.16 grams of DHA each day and the other half were given a placebo. Cognitive performance was measured at various times throughout the study, which included episodic memory and working memory, attention, reaction time and processing speed. The episodic memory is the memory in which events are stored for a protracted period of time, and is part of the long-term memory.

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