P4-111: Longitudinal effects on cognitive function associated with homocysteine and B vitamin status in late adulthood

2008 ◽  
Vol 4 ◽  
pp. T701-T701
Author(s):  
Lawrence J. Whalley ◽  
Kellie Rance ◽  
Susan Duthie ◽  
Helen Fox ◽  
John Starr ◽  
...  
Nutrients ◽  
2018 ◽  
Vol 11 (1) ◽  
pp. 19 ◽  
Author(s):  
Ian Zajac ◽  
Danielle Herreen ◽  
Kathryn Bastiaans ◽  
Varinderpal Dhillon ◽  
Michael Fenech

Whey protein isolate (WPI) is high in vitamin B12 and folate. These and other related markers (holotranscobalamin, methylmalonic acid and homocysteine) have been linked with cognitive health. This study explored the efficacy of WPI for improving cognitive function via delivery of vitamin B12. Moderately vitamin B12-deficient participants aged between 45 and 75 years (n = 56) were recruited into this randomised controlled crossover trial. Participants (55% female) consumed 50 g whey (WPI; active) or soy protein isolate (SPI; control) for eight weeks. Following a 16-week washout phase, they consumed the alternative supplement. Consumption of WPI significantly improved active B12 and folate status but did not result in direct improvements in cognitive function. However, there was evidence of improvement in reaction time (p = 0.02) and reasoning speed (p = 0.04) in the SPI condition for females. Additional analyses showed that changes in active B12, HcY and folate measures during WPI treatment correlated with improvements in cognitive function (all p < 0.05). Results indicate that WPI itself did not result in improved cognitive function but some evidence of benefit of SPI for females was found. However, consistent with previous research, we present further evidence of a role for active B12, HcY and folate in supporting cognitive improvement in adults with low B vitamin status.


2011 ◽  
Vol 24 (3) ◽  
pp. 281-282 ◽  
Author(s):  
C. O. Donovan ◽  
G. Horigan ◽  
H. McNulty

2002 ◽  
Vol 75 (5) ◽  
pp. 908-913 ◽  
Author(s):  
Susan J Duthie ◽  
Lawrence J Whalley ◽  
Andrew R Collins ◽  
Steve Leaper ◽  
Kerstin Berger ◽  
...  

2003 ◽  
Vol 133 (11) ◽  
pp. 3636-3642 ◽  
Author(s):  
Xiang Gao ◽  
Manjiang Yao ◽  
Megan A. McCrory ◽  
Guansheng Ma ◽  
Yanping Li ◽  
...  

Nutrients ◽  
2016 ◽  
Vol 8 (1) ◽  
pp. 26 ◽  
Author(s):  
Vegard Lysne ◽  
Elin Strand ◽  
Gard Svingen ◽  
Bodil Bjørndal ◽  
Eva Pedersen ◽  
...  

2013 ◽  
Vol 15 (1) ◽  
pp. 99-108 ◽  

The human brain shrinks with advancing age, but recent research suggests that it is also capable of remarkable plasticity, even in late life. In this review we summarize the research linking greater amounts of physical activity to less cortical atrophy, better brain function, and enhanced cognitive function, and argue that physical activity takes advantage of the brain's natural capacity for plasticity. Further, although the effects of physical activity on the brain are relatively widespread, there is also some specificity, such that prefrontal and hippocampal areas appear to be more influenced than other areas of the brain. The specificity of these effects, we argue, provides a biological basis for understanding the capacity for physical activity to influence neurocognitive and neuropsychiatric disorders such as depression. We conclude that physical activity is a promising intervention that can influence the endogenous pharmacology of the brain to enhance cognitive and emotional function in late adulthood.


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