In The Brains Of Alzheimer's Patients, These Nutrients Are Lower, Study Finds

For this study, researchers from the Rush University Memory and Aging Project analyzed the diets and cognitive performance of over 1,000 participants for more than a decade, specifically looking at carotenoid intake.

After the study was complete, the team observed that participants who followed the MIND diet (a hybrid between the Mediterranean and DASH diets, which are both popular for their heart and brain health benefits) had a lower risk of Alzheimer's disease, higher cognitive performance, and less Alzheimer's-related brain pathology than those who weren't following the MIND diet.

Further, participants who were getting the highest amount of carotenoids, or the antioxidants lutein and zeaxanthin, had as much as a 50% lower risk of Alzheimer's. Participants whose brains showed Alzheimer's neuropathology, meanwhile, had significantly lower levels of lutein, zeaxanthin, lycopene, tocopherols, and retinol—up to half the amounts seen in normal brains.

As professor and study co-author C. Kathleen Dorey Ph.D. explains in a news release, "These results are consistent with large population studies that found risk for Alzheimer's disease was significantly lower in those who ate diets rich in carotenoids, or had high levels of lutein and zeaxanthin in their blood, or accumulated in their retina as macular pigment," adding, "Not only that, but we believe eating carotenoid-rich diets will help keep brains in top condition at all ages."

The reason being, the study authors explain, is that the brain is vulnerable to cumulative oxidative damage, but this damage can be prevented by antioxidants found in a healthy diet.

To ensure you're getting plenty of carotenoids, lutein, zeaxanthin, and more, it's a good idea to invest in a quality, research-backed multivitamin, to help fill in any gaps in your diet. Here are our favorites (containing plenty of carotenoids) to help you choose!