DHA during aging


Cognitive ability declines naturally with age. During normal aging, there is an increasing use of the resources available for normal cellular maintenance and repair, and total gray matter volume decreases, along with a parallel reduction in brain DHA. There is a gradual 10%-15% loss of total neuronal synapses that results in a cognitive decline, habitually noticed around age 65. This is to say, certain degree of brain atrophy is normal with age, and only when the rate of atrophy is higher, mild cognitive impairment and dementia occur.

Studies link tissue levels of DHA and quality of cognition during aging, and have also associated the cognitive benefits of DHA with neurophysiology and anatomical improvements in the brain; omega-3 intake is positively correlated with gray matter volume in healthy people 65 and older and growing evidence highlights omega-3 efficacy in preventing the loss of both gray and white matter volume and integrity. Many of these studies have reported positive effects of DHA and omega-3 supplementation on cognition, linking intake of DHA with improvements in verbal learning, verbal memory, episodic and visual memory, immediate recall memory, information processing speed, and executive function (among others cognitive domains), and with a slower decline in global cognitive function.

Diet, exercise, and DHA intake can positively affect the normal aging process. What are we waiting for?