Meredith is an older adult who states her age as "not yet 80." she does not like modern technology much, but she exercises and works cross word puzzles every day. she likely has a healthy brain with little to no shrinkage.

That statement isfalse

Studies shows that Brain will not deteroriate if we took necessary vitamins and if we put enough exercise for it on a daily basis. But in this situation, they're referring Physical exercise such as jogging, or swimming. So since meredith refuse to do something related to modern treatment, her brain is most likely to be shrinking.