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Brain health scorecard

Around 45 percent of dementia risk worldwide is linked to factors people can influence, according to the Lancet Commission's 2024 analysis. Twelve questions turn six of the biggest habit levers into an honest scorecard: bands, priorities and next moves. No percentages, no fortune telling, and your answers never leave this device.

  1. 1.How often do you move briskly enough to raise your heart rate: a fast walk, a swim, cycling, sport?
  2. 2.On a typical day, how long do you sit in one stretch without standing up?
  3. 3.How much sleep do you actually get most nights?
  4. 4.How do you usually feel through the morning?
  5. 5.How often do you spend real time with people whose company you enjoy: family, friends, community, faith groups?
  6. 6.Do you have someone you could talk to about something genuinely difficult?
  7. 7.When did you last have your hearing checked, or act on a hearing aid recommendation?

    Untreated hearing loss is one of the largest modifiable dementia risk factors in the Lancet Commission analysis.

  8. 8.How do you treat loud environments: power tools, loud music, headphones at high volume?
  9. 9.Where do you stand with smoking?
  10. 10.How would you describe your drinking across a normal week?
  11. 11.When did you last deliberately learn something genuinely new: a language, an instrument, a skill, a course?
  12. 12.How much of your typical day asks your brain to strain a little: puzzles, reading, planning, problem solving?
0 of 12 answered

Sources

  1. Dementia prevention, intervention, and care: 2024 report of the Lancet standing Commission The Lancet (Livingston G et al), 2024The modifiable risk factor framework behind the six domains.
  2. Risk reduction of cognitive decline and dementia: WHO guidelines World Health Organization, 2019

Last reviewed: 2026-07-16

Keep the brain busy

The learning domain is the fun one to train. Warm up with our reaction game, stretch your working memory, and if sleep was your weak band, our sister site sleep.mu has an entire toolkit for it.

Why bands and never a percentage

The Lancet Commission's numbers describe populations: they estimate how much dementia worldwide is statistically linked to factors like inactivity, untreated hearing loss or smoking. That is powerful public health knowledge, and it is exactly the kind of knowledge that cannot be reversed into a personal prediction. Your genetics, history and luck are not in the equation.

So this scorecard does the honest thing: it shows where your habits stand against what the evidence rewards, domain by domain, and points at the most useful next move. The encouraging part of the science is real, though: the Commission estimates that around 45 percent of dementia risk is tied to things people and societies can change, and the habit levers respond at any age you start.