Cognitive impairment in obese improved by surgery

June, 2011

Consistent with evidence linking obesity and impaired cognition, a new study has found improved cognition in obese patients after bariatric surgery.

Growing evidence links obesity and poorer cognitive performance. Many factors associated with obesity, such as high blood pressure, type 2 diabetes and sleep apnea, damage the brain.

A study involving109 bariatric surgery patients and 41 obese control subjects has found that the bariatric surgery patients demonstrated improved memory and concentration 12 weeks after surgery, improving from the slightly impaired range to the normal range. That of the obese controls actually declined over this period. The improvement of those who had surgery seemed to be particularly related to improved blood pressure.

Study participants will be tested one year and two years after surgery.

Reference: 

[2224] Gunstad, J., Strain G., Devlin M. J., Wing R., Cohen R. A., Paul R. H., et al.
(2010).  Improved memory function 12 weeks after bariatric surgery.
Surgery for Obesity and Related Diseases.

Related News

A Finnish study involving moderately obese adult patients with mild obstructive sleep apnea (OSA) has found that even a modest weight loss (5%) can improve OSA, if occurring in the early stages of OSA.

A study involving 362 children with reading problems has found that 16 weeks of daily 600 mg supplements of omega-3 DHA from algal sources improved their sleep. According to a sleep questionnaire filled out by parents, 40% of these children had significant sleep problems.

A small trial involving seven older adults with insomnia has found that when they consumed 8 ounces of tart cherry juice twice daily for two weeks, they were able to sleep more than an hour longer each night (averaging 84 minutes) compared to when they took the placebo, and their sleep tended to

A small study involving 18 individuals with at least one mild traumatic brain injury with related sleep disturbance has shown that six weeks of morning bright light therapy resulted in a marked decrease in subjective daytime sleepiness, and improved nighttime sleep.

A new study adds to growing evidence of a link between sleep problems and Alzheimer’s. The interesting thing is that this association – between sleep apnea and Alzheimer’s biomarkers — wasn’t revealed until the data was separated out according to BMI.

The issue of ‘chemo-brain’ — cognitive impairment following chemotherapy — has been a controversial one.

Cancer survivors who underwent chemotherapy often suffer long-term cognitive problems. Until now, most research has been occupied with establishing that this is in fact the case, and studies investigating how to help have been rare.

I reported a few months ago on some evidence of a link between disturbed sleep and the development of Alzheimer’s. Now a mouse study adds to this evidence.

Now that we’ve pretty much established that sleep is crucial for consolidating memory, the next question is how much sleep we need.

Older adults who sleep poorly react to stress with increased inflammation

Pages

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