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Dementia describes a cluster of symptoms associated with brain damage, such as memory loss and problem-solving. The condition mainly affects people over the age of 65, although it is not a
natural part of ageing. While it is not known how to prevent dementia, breakthroughs in research suggest making healthy lifestyle decisions can reduce your risk and prevent symptoms from
getting worse. According to Alzheimer’s Society, of all the lifestyle changes that have been studied, taking regular physical exercise appears to be one of the most effective strategies for
reducing your risk of getting dementia. The existing body of research has mainly focused on the benefits of engaging in aerobic exercise to reduce your risk. Several studies looking at the
effect of aerobic exercise (exercise that increases your heart rate) in middle-aged or older adults have reported improvements in thinking and memory, and reduced rates of dementia. In
addition to aerobic exercise, however, yoga has also been championed for its ability to boost brain health. READ MORE: Type 2 diabetes: Eating this food could help manage diabetes and
dementia - what is it? Each of the studies used brain-imaging techniques such as MRI, functional MRI or single-photon emission computerized tomography. All involved Hatha yoga, which
includes body movements, meditation and breathing exercises. "From these 11 studies, we identified some brain regions that consistently come up, and they are surprisingly not very
different from what we see with exercise research," said University of Illinois kinesiology and community health professor Neha Gothe, who led the research with Wayne State University
psychology professor Jessica Damoiseaux. She added: ”For example, we see increases in the volume of the hippocampus with yoga practice.” Many studies looking at the brain effects of aerobic
exercise have shown a similar increase in hippocampus size over time, she said. The hippocampus is involved in memory processing and is known to shrink with age, Gothe said: "It is also
the structure that is first affected in dementia and Alzheimer's disease." Bolstering the findings, another study published in the Journal of Alzheimer's Disease found that
yoga and meditation are more effective than memory exercises for preventing the mental decline that often precedes Alzheimer’s. Alzheimer's disease, which leads to memory loss and
difficulty thinking, is the most common cause of dementia. To gather the findings, scientists enlisted 25 volunteers over the age of 55 who had reported memory issues such as forgetting
names and faces, missing appointments or misplacing belongings. They split them into two groups, with one carrying out memory exercises and the other yoga and meditation. They found that
after three months both were equally good at improving verbal memory skills, which help people remember names and word lists. Yoga brought additional benefits, however, boosting
visual-spatial memory. Spatial memory helps the brain to map out a route to a desired location and to recall where an object is placed or where an event occurred.