With your higher risk of dementia post stroke; IS YOUR DOCTOR COMPETENT ENOUGH TO INSTRUCT THE DIETICIAN TO GET YOUR FIBER INTAKE CORRECT?
Your risk of dementia, has your doctor
told you of this? Your doctor is responsible for preventing this! Is
s/he willing to prevent this?
1. A documented 33% dementia chance post-stroke from an Australian study? May 2012.
2. Then this study came out and seems to have a range from 17-66%. December 2013.`
3. A 20% chance in this research. July 2013.
4. Dementia Risk Doubled in Patients Following Stroke September 2018
The latest here:
Higher Dietary Fiber Tied to Lower Dementia Risk
A higher intake of fiber, especially soluble fiber, was linked to a markedly lower risk for dementia in older adults, with those consuming the most fiber facing roughly half the risk of those consuming the least.
The findings come from a long-running observational cohort study of older adults, which tracks diet and cognitive health over time but cannot prove cause and effect.
Over an average follow-up of 7.6 years in the Rush Memory and Aging Project, 430 of 1508 participants developed dementia, with higher total and soluble fiber intake consistently linked to lower risk, even after accounting for lifestyle and dietary factors.
“Most adults aren’t consuming enough fiber, which may have broader implications for long-term cognitive health. Soluble fiber may be especially important due to its role in the gut-brain axis,” study investigator Nicole Glick, a third-year medical student at Rush Medical College in Chicago, told Medscape Medical News.
The study was presented on April 21 at the American Academy of Neurology (AAN) 2026 Annual Meeting.
More Fiber — Better Brain Health?
The average fiber intake in the US hovers around 16 g/d, far below the recommended levels of roughly 25-30 g/d, depending on sex. Healthy diets, such as the Mediterranean diet and the Mediterranean-DASH Intervention for Neurodegenerative Delay (MIND) diet, have gained attention for their neuroprotective effects, and both are rich in fiber.
Glick and colleagues examined the association between dietary fiber and risk for incident dementia among 1508 participants (mean age, 80 years; 75% women), all of whom were free of dementia at baseline.
Diet was assessed using a validated food frequency questionnaire, and participants were grouped into quintiles based on their level of fiber consumption. Cox proportional hazards models adjusted for demographics, lifestyle factors such as BMI and physical activity, and additional dietary variables, to estimate dementia risk over time.
During study follow-up, 430 (28%) participants developed dementia. In fully adjusted models, participants in the highest quintile of total fiber intake (about 27 g/d) had a 46% lower risk for dementia than those in the lowest quintile (hazard ratio [HR], 0.54; P = .004).
The association appeared to be driven largely by soluble fiber. Those with the highest intake had a 44% lower risk (HR, 0.56; P = .036). The association with insoluble fiber was not statistically significant, although the overall trend suggested a possible benefit, Glick said.
She noted that soluble fiber may be particularly influential because of its role in digestion and the gut-brain axis.
Glick noted that soluble fiber may play a larger role in cognitive health because its fermentation in the gut produces compounds that are thought to support brain function.
Even getting near the recommended daily amounts of fiber appears to confer measurable benefit, Glick told Medscape Medical News.
Adults in the third and fourth quintiles — consuming about 19 g/d and 22 g/d, respectively — also had a lower risk of developing dementia, reinforcing that even modest increases in fiber intake may yield meaningful long-term benefits for cognitive health, Glick noted.
The study’s limitations include its observational design, reliance on self-reported dietary data, and limited generalizability due to its older, select cohort.
Overlooked in Brain Health
Dietary fiber is a “critical but often overlooked component of brain health. It supports the production of short-chain fatty acids — small molecules with neuroprotective properties that also benefit the immune system, cardiovascular system, and lungs,” said Majid Fotuhi, MD, PhD, adjunct professor of neuroscience at The Zanvyl Krieger Mind/Brain Institute of Johns Hopkins University in Baltimore, who commented on the findings for Medscape Medical News.
Fotuhi, who was not involved in the study, said the findings add “meaningful, prospective evidence to a growing body of literature linking plant-rich dietary patterns to reduced dementia risk.”
“The data consistently support shifting toward more plant-forward eating as a practical, low-risk strategy for healthy brain aging. The good news is that high-fiber foods are easy to incorporate into daily life,” he added.
The findings align with a broader body of research on diet and brain health, said Courtney Kloske, PhD, director of scientific engagement at the Alzheimer’s Association.
“While we need further research to better understand the related biological mechanisms, we know from a number of studies that higher-fiber foods can have a positive impact on brain health. This conference presentation showed that higher total dietary fiber intake was associated with a lower risk of dementia, independent of demographic, lifestyle, and other dietary factors,” she said.
Kloske added that the Alzheimer’s Association has long encouraged eating a balanced diet, which includes raising fiber intake. However, she said it’s important to note that dietary changes alone will have less benefit when combined with other healthy habits.
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