Kefir may enhance memory in Alzheimer's patients

A new review suggests that kefir, a probiotic-rich drink, might help improve memory and cognitive functioning, possibly benefiting people with Alzheimer’s disease. Researchers from Brazil examined several studies on kefir and its potential effects on brain health. The review found limited but encouraging evidence. One study with human participants indicated that drinking kefir improved cognitive performance and memory. This piqued the scientists' interest in kefir, considering its unique microbial composition. There is growing evidence that gut health may influence brain health. Probiotics, like those found in kefir, support gut health by increasing beneficial bacteria. This could help reduce symptoms of dementia and improve overall well-being. Currently, about 7 million people in the U.S. are living with Alzheimer's disease, and that number is expected to nearly double in 25 years. Due to the significant impact of Alzheimer’s on individuals and families, researchers are exploring various treatment options, including probiotics. Kefir is made by fermenting grains with milk, and it contains both bacteria and yeast. The researchers reviewed data from multiple studies, ultimately focusing on seven relevant studies. Among them were one human study, four involving rodents, and two with fruit flies. The scientists aimed to understand how kefir could affect cognitive function, neuroinflammation, and oxidative stress. Oxidative stress can increase in the aging brain, contributing to dementia, which makes the research on kefir particularly significant.