Bridge and the Brain: What the Science Really Says
Published September 15, 2026
Ask almost any club player why they keep coming back and sooner or later you'll hear it: "Bridge keeps your mind young." But is it true? We went looking for the studies behind the saying, and found something better than a slogan: genuinely encouraging results, plus a few honest "buts".
What your brain does in a single hand
In one ordinary hand you count your high-card points. You hold the whole auction in your head — what partner said and what the opponents said. As declarer you plan the whole hand before dummy plays its first card. You count trumps as they fall. You work out, from the cards already played, where the missing queen is most likely hiding. And you do all of it in silent cooperation with another person.
Memory, arithmetic, planning, deduction and teamwork, packed into ten minutes.
California, 2000: twelve players and a blood test
Marian Diamond, a neuroscientist at UC Berkeley, had a bold hunch: that the planning region at the front of the brain might also nudge the immune system. To test it she needed an activity that works that region hard, and she picked contract bridge — in her words, the closest thing in daily life to the card-sorting tasks used in the lab.
Twelve women in their seventies and eighties, members of a bridge club in Orinda, California, gave blood before and after an hour and a half at the table. Afterwards their counts of one type of immune cell, CD4 T cells, had gone up; in two of the three groups the rise was statistically significant.
A lovely result — and a very small one: no comparison group, shown only as a conference poster, and described by the Berkeley team itself as preliminary. A question worth asking, not an answer.
New York, 2003: 469 people over 75
A far larger study came out of Albert Einstein College of Medicine in the Bronx and was published in the New England Journal of Medicine. Researchers asked 469 people over the age of 75, none with dementia, how often they did a range of leisure activities, then followed them for a median of about five years. During that time 124 developed dementia.
Reading, board games, playing a musical instrument and dancing were all linked with lower risk. The team also built a score for mentally stimulating activity, and each one-point step up that scale went with roughly a 7% lower risk — even after allowing for how well each person's memory was working at the start.
Scotland: a test at 11, and again at 79
Researchers in Edinburgh had a rare advantage. They worked with 1,091 people born in 1936 who had sat an intelligence test as eleven-year-old schoolchildren. The same people were tested again at 70, 73, 76 and 79, and asked how often they played games such as cards, chess, bingo or crosswords.
Everyone's thinking slipped a little across their seventies, as you'd expect. But frequent game players slipped less, with the clearest difference in memory. And because the team knew how sharp each person had been as a child, they could allow for the simplest explanation — that bright children just grew up into keen players.
Australia, 2023: ten thousand people, ten years
The biggest study of the four came from Monash University and appeared in JAMA Network Open. It followed 10,318 Australians aged 70 and over for around a decade. Those who regularly did mentally demanding things — crosswords, quizzes, cards, chess, writing, taking classes — were 9 to 11% less likely to develop dementia. Creative hobbies like knitting and painting were linked with about a 7% lower risk.
There was a surprise, too: social outings on their own, such as restaurants or the cinema, showed no clear link. The researchers stressed that social connection still matters, and that most participants were socially active anyway. Bridge, happily, doesn't make you choose — it's a workout for the mind with a partner sitting across the table.
So what can honestly be said?
None of these studies proves that bridge prevents dementia. They observe people rather than randomly assigning them to play or not play, so it's always possible that sharper minds simply choose more games — something the researchers themselves point out.
What can be said is this: across different countries and decades, older people who keep challenging their minds with games tend to hold on to their memory and thinking better. And bridge is one of the richest such games there is — memory, counting, planning, a partner, and always something new to learn. (For anything medical, of course, your doctor is the right person to ask.)
New to the game? Have a look at how to play bridge and the rules of bridge, then simply play — Yehudit explains every move along the way.
J Bridge is a free bridge game in Hebrew and English: play against the computer, Yehudit teaches you step by step, no ads — and it works offline after the first load.