How to protect your brain from dementia
This is not a simple question and there isn’t just one answer. Dementia is a term used to describe symptoms from a number of different illnesses, so different forms of dementia may require alternative approaches. However an article about how Jessica Langbaum keeps her brain young makes some points that we all can learn from. Jessica is the Associate Director of the Alzheimer’s Prevention Initiative at the Banner Alzheimer’s Institute in Phoenix, so she knows a thing or two about reducing the risk of developing dementia.
There is an enduring belief that activities such as Sudoku or app based brain training can offer some benefit is the battle against neurodegeneration. But Dr Langbaum makes the point that any exercise as narrow in scope as single task brain training is probably too limited to be of significant benefit. So that while Soduko for example, might help to keep the parts of the brain linked to simple calculations in good working order, this may offer little protection against Alzheimer’s dementia. The presumption is that maintaining large areas of brain function at high levels of performance is likely to keep overall brain health for longer. This idea is often described at the use it or lose it hypothesis, that once we start to scale down the demands on our brain we may unwittingly increase the risks of permanently losing function and structure.
“regular meditators have been observed to have both younger brains and thicker cortex than non-meditators”
The use it or lose it approach isn’t an ultimate answer but it does give us some great signposts about how to maintain brain health. I have often considered that continued use of meditation into middle and old age by Buddhists may be directly linked to the anecdotal evidence suggesting lower rates of dementia in certain groups of meditators. Many long term Buddhists increase their meditation practice in retirement and can frequently be found working for a range of good causes in voluntary and paid capacities, even at advanced ages. There is research that suggests spiritual practice per se might have a preservative effect on cognitive function but I think we must also consider the more direct influence of meditation methods on the regular renewal of brain function and structure.
Many well established Buddhist meditation practices such as tonglen have been designed as mind training systems. Their original goal was almost certainly not to reduce the risks of dementia, but they have long been associated with increasing wisdom, clarity and compassion. From the neuroscience point of view this means the methods are linked to activity in several of the most important brain networks, such as those connected to empathy, memory, attention, visualization and planning. This is specifically why Brain Renewal Meditation (BRM) has been developed with reference to reliable traditional methods and is also supported with research from neuroimaging and cognitive psychology.
The best advice we can offer to reduce your risks of developing dementia is to,
- start early, cognitive decline begins in our late 20s
- stop smoking
- keep your brain as active as possible for as long as possible
- stay socially engaged
- challenge yourself
- stay physically active
- watch your diet
- try forms of brain training able to keep a range of brain structures firing