Fruit & veges slow memory decline in long-running study

  • A large, long-running study has found an association between consumption of fruit & vegetables and subjectively assessed memory skills in older men.

A study following nearly 28,000 older men for 20 years has found that regular consumption of leafy greens, dark orange and red vegetables and berry fruits, and orange juice, was associated with a lower risk of memory loss.

The study looked at 27,842 male health professionals, who were an average age of 51 in 1986, when the study began. Participants filled out questionnaires about how many servings of fruits, vegetables and other foods they had each day, at the beginning of the study and then every four years.

Specifically:

  • those who consumed the most vegetables (around six servings a day) were 34% less likely to develop poor thinking skills than the men who consumed the least amount of vegetables (around two servings)
  • 6.6% of men who consumed the most vegetables developed poor cognitive function, compared to 7.9% of men who consumed the least
  • those who drank orange juice every day were 47% less likely to develop poor thinking skills than those who drank less than one serving per month
  • 6.9% of men who drank orange juice every day developed poor cognitive function, compared to 8.4 % of men who drank orange juice less than once a month

Interestingly, those who ate larger amounts of fruits and vegetables 20 years earlier were less likely to develop cognitive problems, whether or not they kept eating larger amounts of fruits and vegetables about six years before the memory test.

Cognition was not, however, assessed objectively, nor was it tested at baseline. In 2008 and 2012, participants were given a short cognitive test to assess their subjective judgments of their memory and cognition. The brief test included such questions as:

  • "Do you have more trouble than usual remembering a short list of items, such as a shopping list?"
  • "Do you have more trouble than usual following a group conversation or a plot in a TV program due to your memory?"

Just over half the participants (55%) had good thinking and memory skills, 38% had moderate skills, and 7% had poor thinking and memory skills.

https://www.eurekalert.org/pub_releases/2018-11/aaon-ojl111918.php

Reference: 

Changzheng Yuan et al. 2019. Long-term intake of vegetables and fruits and subjective cognitive function in US men. Neurology, 92 (1) e63-e75.

 

Related News

A three-year study involving 152 adults aged 50 and older, of whom 52 had been recently diagnosed with mild cognitive impairment and 31 were diagnosed with Alzheimer's disease, has found that those with mild or no cognitive impairment who initially had amyloid-beta plaques showed greater cogniti

More evidence for early changes in the eye in Alzheimer’s disease comes from a study involving both rats and postmortem human retinas.

Blocking a receptor involved in inflammation in the brains of mice with severe Alzheimer’s produced marked recovery in blood flow and vascular reactivity, a dramatic reduction in toxic amyloid-beta, and significant improvements in learning and memory.

A multi-year study involving 207 healthy older adults, in which their spinal fluids were repeatedly sampled and their brains repeatedly scanned, has found that disruptions in the default mode network emerges about the same time as chemical markers of Alzheimer’s appear in the spinal fluid (decre

An analysis of the anatomical connectivity in the brains of 15 people with Alzheimer's disease, 68 with mild cognitive impairment and 28 healthy older individuals, has found several measures showed disease effects:

The first detailed characterization of the molecular structures of amyloid-beta fibrils that develop in the brains of those with Alzheimer's disease suggests that different molecular structures of amyloid-beta fibrils may distinguish the brains of Alzheimer's patients with different clinical his

A study involving mice lacking a master clock gene called Bmal1 has found that as the mice aged, their brains showed patterns of damage similar to those seen in Alzheimer's disease and other neurodegenerative disorders. Many of the injuries seemed to be caused by free radicals.

A new study involving 96 older adults initially free of dementia at the time of enrollment, of whom 12 subsequently developed mild Alzheimer’s, has clarified three fundamental issues about Alzheimer's: where it starts, why it starts there, and how it spreads.

Analysis of 5715 cases from the National Alzheimer's Coordinating Center (NACC) database has found that nearly 80% of more than 4600 Alzheimer's disease patients showed some degree of vascular pathology, compared with 67% of the controls, and 66% in the Parkinson's group.

The jugular venous reflux (JVR) occurs when the pressure gradient reverses the direction of blood flow in the veins, causing blood to leak backwards into the brain.

Pages

Subscribe to Latest newsSubscribe to Latest newsSubscribe to Latest health newsSubscribe to Latest news