A Simple Brain Boost in Your Bathroom

You might not realize it, but a little routine in your bathroom could give your brain the workout it needs. This is especially significant as many people, around one in ten adults aged 45 and older, are reporting issues with memory or cognitive decline. And, of course, a lot of folks are also taking care of those who are facing cognitive issues.

Sure, there are countless brain-training apps out there, but there’s also a surprisingly simple technique that won’t cost you anything and takes just about two minutes: try brushing your teeth with your non-dominant hand. For most people, that would be the left hand.

Neal K. Shah, an NIH-funded researcher, brought this intriguing idea to light in a TikTok video. He encourages us to use our “wrong hand” for everyday tasks.

Brushing teeth is often something we do on autopilot. After all those years, our brains have a clear map of the routine, making it easy for our muscles to take over without much thought. But, when you switch it up and use your non-dominant hand, suddenly your brain has to engage more actively and come up with a new approach.

This extra challenge activates different brain areas that deal with planning, coordination, and focus. Consistently practicing unfamiliar tasks can strengthen connections between brain cells—a process known as neuroplasticity. It’s kind of like how muscles respond when they encounter new exercises; the brain adapts to fresh experiences, too.

Shah highlights that cross-lateral movements—where you use the opposite side of your body—can tap into wider brain networks related to attention, memory, and coordination. This can be particularly valuable as we age.

Having a solid cognitive reserve—essentially, your brain’s ability to function well despite the effects of aging or conditions like dementia—can help you withstand more changes before symptoms show up. Building this reserve doesn’t need to involve costly treatments or programs. Engaging in new activities, maintaining social connections, exercising, and challenging your mind in different ways can all work towards this goal.

For instance, research shows that bilingualism could offer significant benefits for long-term brain health. Natalie Phillips, a psychology professor in Montreal, noted that older adults who can speak more than one language often fare better against dementia. While it doesn’t completely prevent dementia, it might delay the onset, allowing individuals to cope better as changes occur.

Additionally, a study out of Japan found that senior adults who cook at home could potentially lower their risk of dementia by anywhere from 30% to almost 70%. Interestingly, those who were less skilled and thus challenged themselves more gained the most benefit.

So, whether it’s swapping hands while brushing your teeth or learning a new language, these seemingly minor changes could be quite impactful. They offer a small yet meaningful way to take charge of your brain health.