Health: How fish intake improves memory
Udupi Today Media Network
Washington, 03 July 2012: Medical researchers at the University of Alberta have discovered a possible explanation for why taking a diet high in DHA, an omega-3 fatty acid found in fish, improves our memory.
Principal investigator Yves Sauve and his team found that lab models fed a high-DHA diet had 30 per cent higher levels of DHA in the memory section of the brain, known as the hippocampus, when compared to animal models on a regular, healthy diet.
“We wanted to find out how fish intake improves memory,” said Sauve, a researcher in the Faculty of Medicine and Dentistry who works in the department of physiology, the department of ophthalmology and the Centre for Neuroscience.
“What we discovered is that memory cells in the hippocampus could communicate better with each other and better relay messages when DHA levels in that region of the brain were higher. This could explain why memory improves on a high-DHA diet,” he said.
Sauve noted it is a key finding that when a diet is supplemented with DHA, that additional stores of the omega-3 fatty acid are deposited in the brain. His team confirmed this finding, a discovery other labs have noted as well.
Supplementing your diet with DHA, such as increasing fish intake or taking supplements, could prevent declining DHA levels in the brain as we age, Sauve suggested.
Earlier this year, Sauve and other colleagues discovered DHA prevents the accumulation of a toxic molecule at the back of the eye that causes age-related vision loss. He is continuing his research in this area.
Their findings been have just published in the peer-reviewed journal Applied Physiology, Nutrition, and Metabolism.
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