There are a lot of brain games that make a lot of promises. Do they really work? We’re not sure. According to the director of the neurocognitive disorders program at Duke, “Almost all the marketing claims made by all the companies go beyond the data. We need large national studies before you can conclude that it’s ready for prime time.” Either that, or we need to play enough brain games until we just know the answer.

+ In other news, a study on glucosamine found it did nothing for knee pain or deterioration, and another suggested that high protein programs could be damaging in the long run.