As we live longer, our risk of cognitive impairment is increasing. How can we delay the onset of symptoms? Do we have to give up every indulgence or can small changes make a difference? We asked neurologists for tips on how to keep our brains healthy for life.
TAKE CARE OF YOUR HEALTH
“All of the sensible things that apply to bodily health apply to brain health,” says Suzanne O’Sullivan, a consultant in neurology at the National Hospital for Neurology and Neurosurgery in London, and the author of The Age of Diagnosis.
Photo: AFP
“When you’re 20, you can get away with absolute murder. You can not sleep for nights at a time and stuff like that. But you get away with nothing when you hit middle age. With every year that I get older, my lifestyle gets healthier.”
All of her consultations will focus to some degree on lifestyle choices, she says: “I work with a lot of people with degenerative brain diseases, and they are not caused by lifestyle. But everything is made better by having a moderate degree of exercise, eating healthily and sleeping well, whether it be bodily
DON’T SMOKE, AND DON’T DRINK DAILY
Photo: AFP
“If you want to damage your brain, smoke a lot,” says Tom Solomon, professor of neurology at the University of Liverpool.
Likewise, “a lot of alcohol is not good for you. There is some soft data suggesting one to two units might reduce risks of cardiac disease in the elderly, but the evidence overall is that alcohol is harmful, especially to the brain.”
Faye Begeti, a neurologist and neuroscientist at Oxford University hospitals, takes a hard line: “I find that people who are not alcoholics, but drink a small amount of alcohol every day over many decades, can still run into problems. With alcohol I have two rules for my patients: not out of habit, so only when celebrating; and not drinking daily.”
Photo: Reuters
EXERCISE THREE TIMES A WEEK
There is a well-established link between physical activity and brain health, says Richard Davenport, a consultant neurologist in Edinburgh and the outgoing president of the Association of British Neurologists. “It works on many levels: psychological, metabolic, physiological.”
“Things that are good for your blood vessels are good for your brain,” Solomon says. “A lot of dementia is because of damaged blood vessels. Physical activity is good for blood vessels as it keeps blood pressure down.”
Solomon got a Guinness world record for running the fastest marathon dressed as a doctor in 2010, raising money for Encephalitis International, a brain inflammation charity.
But you don’t need to run marathons to keep your brain healthy, he says. Although, “there is not much hard data telling you exactly how much exercise to do — in our headache clinics we say do 20-30 minutes of something that gets you at least a little bit short of breath two or three times a week, so running, swimming, cycling. They are very good for de-stressing, too,” he adds — another bonus for the brain.
STAND ON ONE LEG
“There are studies that show being active in every decade really helps with brain longevity,” says Begeti. “I advise people to include single-leg exercises in their routine, because walking relies heavily on single-leg balance, and maintaining this becomes crucial as we get older. Aerobic exercise releases a brain-nourishing chemical called brain-derived neurotrophic factor that supports our neurons. A combination of that with resistance exercises that build up muscle is very important, as numerous studies have found greater muscle mass reduces cognitive decline, even in those who have already been diagnosed with dementia.”
OPT FOR OLIVE OIL
Opt for “antioxidants and unsaturated fats, and not too much red meat,” says Solomon.
“The biggest evidence is for the Mediterranean diet,” says Begeti, adding: “I was born in Greece, so maybe I am biased.”
She says the advice she often gives on this is simple: “When you cook, your primary source of fat should be olive oil rather than butter. This is what I do and it is a really easy transition to make. You can have cakes with olive oil in; everything you fry should be in olive oil, rather than butter. I’m not saying you would never eat butter again, but that the primary source of fat is olive oil. And having some omega-3 with oily fish has really good evidence for brain health as well.”
She says it is important for vegans and vegetarians to take vitamin B12 supplements.
DRINK WATER, NOT COFFEE
“We see people who have simple or chronic headaches,” says Solomon. “The things that reduce the risk of headaches are all very much the same. Regular exercise. Staying hydrated by drinking at least two liters of water a day. Stopping all caffeine. Not skipping meals. Getting to bed at a sensible time. We usually say to people: if you do this religiously for three months, headaches will reduce or come under control. And most of those things are also good for your general brain health, as far as we know.”
SORT OUT YOUR SLEEP
“Good sleep starts at the beginning of the day,” says Begeti, “rather than at night when you are stressing about not getting good sleep. Anchor your morning by getting up at roughly the same time each day. If you need more sleep at the weekends, then catch up with 60 to 90 minutes, or one sleep cycle extra. Don’t make it too erratic, because then your brain doesn’t know when to produce the right hormones.”
“We still don’t exactly know what sleep is all about,” says Davenport, “but increasingly, there is good evidence that sleep is allowing the brain some downtime to do a bit of tidying up, and in particular, tidying some of these dodgy proteins that ultimately may do bad things in terms of degenerative disease. In other words, getting decent sleep matters.”
ESTABLISH PHONE BOUNDARIES
We are in the midst of a panic about what technology is doing to our brains, but as Begeti explains in her book The Phone Fix, the science does not confirm that we are addicted to our phones. That said, she limits checking her Instagram account to twice a day and mutes all WhatsApp groups. “I suggest people try to develop a routine or a schedule of connection and disconnection that works for them. Distraction is a big thing when it comes to technology. I prefer people to use technology intentionally because they want to, rather than to avoid doing some difficult work or dealing with something, and instead using technology to fill that gap. When people use it as an avoidance tactic, I think that is when it can make them feel bad.”
Does having so much information readily available online mean we are losing memory capacity?
“You may not be able to remember a phone number, but the brain is very adaptable,” says Begeti. “It remembers things that you use and sidelines things that you don’t. If you don’t remember phone numbers daily, then your brain might not be accustomed to remembering them. It doesn’t mean this ability has disappeared. It is more the brain is prioritizing certain things that you do.”
USE TECH TO MAKE SOCIAL CONNECTIONS
Maintaining social connections is crucial in helping to avoid dementia.
“Of course, there are problems associated with technology,” says O’Sullivan. “There is some awful content on there. But I think we often forget the positive things it brings to our lives. For older people, who may not have great mobility, it is creating incredible connectedness.”
Begeti adds: “There are early studies with preliminary findings that show if middle-aged adults engage in social media, they have reduced incidence of dementia.”
TAKE UP HOBBIES, MEET NEW PEOPLE
“Brain and mind health is all about having ambitions and interests outside of yourself,” says O’Sullivan. “I have so much work to do that my mind is kept well occupied, but my plan going forward is to do all the things I wish I had time to do now: go back to university, do art appreciation courses, and challenge myself in settings where I’ll be mixing with lots of different people.”
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