KEEP SHARP

CNN chief medical correspondent Gupta counsels that in order to best take care of your body, you have to first take care of your mind.

The author’s primary concern is to nurture a resilient brain that propagates new cells, makes the ones you have work more efficiently, and is continuously enriched throughout life. In particular, he wishes to stave off age-related brain illnesses classified under dementia, with Alzheimer’s at the fore. Unfortunately, writes Gupta, “we often don’t and can’t know what triggers cognitive decline in the first place or what propels it over time.” Regarding the brain as a whole, “we are still not exactly sure what makes it tick.” As such, the author suggests that we get out in front of it and act preventatively by engaging in behaviors that are widely considered brain-friendly. In a steady, measured voice, he presents a comprehensive view of the best that brain science has to offer to preserve and improve memory at the cognitive level. The villains are a rogue’s gallery of familiar faces: “physical inactivity, unhealthy diet, smoking, social isolation, poor sleep, lack of mentally stimulating activities, and misuse of alcohol.” Gupta explores the evidence, both scientifically documented and anecdotal (but common-sensical), behind the value of exercise; strategies to heighten attention, focus, and concentration; relaxation (including meditation and restorative sleep); diet’s microbial effect on the brain; and the value of a diverse social network. None of this is going to make your jaw drop, but they are all good reminders of their import and how we can let them slide by without much thought. Gupta is a shameless name-dropper—“my friend, actor and fitness buff Matthew McConaughey” gives him exercise advice; the Dalai Lama privately tutors him in meditation—but he is also a genuine source of practical knowledge and sympathy to those struggling with dementia and the family members who are primary caregivers—to whom he tenders a wealth of resources.

Inclusive and recognizably sturdy advice on building a healthy brain.