Eating a fresh avocado a day increases lutein levels by 25 percent in the eyes and significantly improves working memory and problem-solving skills in healthy adults over 50.
Researchers at the University of Tufts say that daily consumption of fresh avocado can improve cognitive function in older people after observing an increase in lutein levels in the eyes, according to a small study published in Nutrients.
Specifically, the study included 40 healthy adults over the age of 50 who ate a fresh avocado for six months and after this period observed a 25 percent increase in lutein levels in their eyes and significantly improved work memory and problem solving skills.
"Monounsaturated fats, fiber, lutein and other bioactive substances make avocados particularly effective in enriching levels of neural lutein," said Elizabeth Johnson.
As the study participants incorporated an avocado into their daily diet, the researchers observed a gradual increase in the amount of lutein in their eyes and a progressive improvement in their cognitive abilities, as measured by tests designed to evaluate memory, processing and levels of care.
In contrast, the control group of participants who did not eat avocados experienced fewer improvements in cognitive health during the study period and instead of avocado ate potatoes and chickpeas because they provide the same calories but less lutein and monounsaturated fats
Despite the finding, the authors admit that more research is needed to determine if the results can be repeated with slightly lower consumption, such as one-third a day, which would amount to about 136 micrograms of lutein.
"The results of this study suggest that monounsaturated fats, fiber, lutein and other bioactive substances make avocados particularly effective in enriching levels of neural lutein, which can provide benefits not only to eye health, for brain health, "said Elizabeth Johnson, lead researcher for the study.
Source: Diario Médico
Available at: http://geriatria.diariomedico.com/2017/08/31/area-cientifica/especialidades/geriatria/el-consumo-diario-de-aguacate-mejoraria-la-funcion-cognitiva-en-mayores