Earlier this year, I took a break from my phone for a full week while on vacation in Mexico. My somewhat impulsive decision to forgo an international plan and leave my phone in my hotel room led to one or two tricky situations. But mainly, it was refreshing to live in the present moment. I had been feeling fatigued by social media before the trip – Instagram being my particular vice – so by the end, it truly felt like I’d gone through a detox.

When I inevitably returned to my device, I felt newly, palpably aware of how much time I was wasting on social media. Why was I so easily consumed by parking lot spats, celebrity interviews and videos with captions like ‘___ will leave you speechless’, none of which had any real significance beyond holding my attention? The feeling reminded me of a quote I’d once encountered, about how easy it is to be distracted by disposable content. It perfectly summed up what’s so quietly frustrating about social media these days, but the irony was that I couldn’t remember the exact quote, or even where I’d seen it, due to the sheer amount of content I regularly consume.

I looked everywhere for the origin. I revisited my YouTube history and Instagram posts I’d ‘liked’, feeling horrified at how much time I had spent in the digital world. I thought for sure it was a quote from the YouTuber Mina Le’s insightful video ‘Why Is Social Media Not Fun Anymore?’, or from an audiobook I’d enjoyed. No, it must have been mentioned in one of the countless Instagram Reels that the algorithm has calculatedly served me. Eventually, I gave up my search, a decision that, in itself, was its own relief from the endless cycle of content consumption.

My twins turned 11 the other day. I’m thankful the endless nappy changing and interrupted nights of their infancy are in the distant past. But there are new stresses, such as becoming an on-call chauffeur – to parties, sleepovers and sports clubs. Then, as now, the end result is similar: I’m frazzled most of the time. Ask me to guess and I’d say that being a parent has probably accelerated my brain age. So you can imagine my surprise when I stumbled upon a new paper in the journal Social Cognitive and Affective Neuroscience by James K Rilling and colleagues that claims caregiving – including being a dad – is associated with having a brain that’s young for your age.

The study builds on past research that found mothers and fathers in their 50s had a younger ‘brain age’ compared with their childless peers – by about half a year. This was based on measures of their brain structure, such as white- and grey-matter volume, as judged against databases of hundreds of brains of various ages. The new study extended this pattern to grandmothers and people caring for someone with dementia, and the findings suggested the brain age benefit might be even greater later in life. Compared with controls, grandmothers and caregivers had brain ages that were between four and six years younger, on average (after adjusting for other factors such as income and BMI). Both the old research and the new suggest there’s a sweet spot – too many (grand)kids or too much stress and the brain benefits are reduced.

As to why caregiving is associated with lower brain age, the researchers propose various reasons, such as being more mentally and physically active, the emotional connection, and the sense of meaning and purpose that comes from being a caregiver. My brain feels tired, but it’s nice to know the responsibilities of parenthood might be keeping it youthful!