Learning to bake, picking up a language or settling in for a regular board game night all fall under the same broad heading in Alzheimer's Research UK's advice: keeping the brain challenged. The charity points to mental stimulation, alongside protecting mental wellbeing and sleeping well, as ways of supporting brain health across a lifetime.
The mechanism researchers point to is cognitive reserve - the brain's capacity to keep functioning even when disease processes such as those seen in Alzheimer's have begun to cause damage. The thinking is that a brain regularly stretched by new and demanding tasks has more ways of working around that damage, which is why two people with similar levels of underlying pathology can differ in how much difficulty they experience.
What the science cannot yet say is which activities do the most good. Understanding is improving, but there is no ranked list of brain-boosting hobbies, and Alzheimer's Research UK is candid about that gap. The charity's practical framing is that enjoyment matters, because an activity someone genuinely likes is one they will actually keep doing - and consistency is the part that counts.
That leaves plenty of room for personal choice, from reading and art to learning something entirely new. It also places this advice within a wider set of brain health factors rather than as a standalone fix, with sleep and mental wellbeing named in the same breath as mental challenge.