although, the study is yet not cop phraoepl.e, this is promising to show there is perhaps of a means of a non-invasive study to look at those at risk for complications from alzheimer's. gerri: it looks like we'll be able to detect the disease. it was like 100% accuracy. in telling you, that you have the disease early on. how does that bullpen people manage the disease? >> here is where it is relevant, in addition to this study there is other evidence to suggestion that by intervening earlier, with aldzal patients in -- alzheimer's patients in modifying exercise or diet or behavioral changes, they can decrease the cognitive decline. there is a big push to look for other areas in terms of suggestions or earlier diagnosis so by intervening they can extend sort of the functional period for some of these patients, that really is where a lot of the focus is. gerri: are you telling me that alzheimer's is associated with lack of activity, isolation. i heard there are connections to depression. it might help if you are healthy to waylay