dr. david agus from los angeles.s for getting up this morning. >> i'm up, anthony. >> what are some of the most prominent changes? >> in 2012 they say nobody should be tested for psa if it didn't merit it. today they're showing clear survival for the people who were tested. should they change the recommendations so people age 55 through 69 talk to their doctors? it's a discussion with your doctor whether you should be test order not. the problem is there's some false positives so not everybody should be tested, but the discussion should happen, 55 to age 69. >> david, dr. david agus, they looked at the use of mris for that screening. what did it find? >> it's so cool, right? wednesday they said we have a problem with biopsies, too many false positives, but we have to do it because it saves lives. the next day the new engla"new journal of medicine" has more. if you know where to stick the needle, you get fewer false positives and fewer need biopsies. it's pretty exciting. >> david, these false positives are really sca

dr. david agus heads the university of southern california's west side cancer center. good morning.can you break this down for us? >> i'm going to try. so 29,000 people a year die of prostate cancer. the second most common cancer cause of death in men. and there's a test, a blood test called a psa test where it's elevated. can indicate prostate cancer but can also be inflammation or a normal large prostate. they did a trial where they said you get tested and do whatever you want. and it doesn't show a survival advantage because the do what you want arm, they got tested anyway. in europe they did the study and what they showed is that people lived longer. in 2012, the -- our government recommendation, u.s. preventative task force said people shouldn't get tested because there's not a major survival advantage. what's shown in that trial as it's gone longer is more and more people were saved. that being said, it's not a perfect test but age 55 to 69 you should have a discussion with your doctor. they're not saying go get it but they're saying it's a value systems based decision and it

dr. david agus has been wearing the same thing for the past seven days. >> he said, david, i want you to and white. wearing the same thing they'll focus on what you're saying much more than what you're wearing. >> do you get bored? >> no. >> what is the pair dox of choice? >> that's simply that although choice is good, you can have too much of a good thing. when people have too many options they're paralyzed instead of liberated. they make worse decisions. even when they make good decisions they're less satisfied with them. >> reporter: we wanted to try it for ourselves. first, pick out the perfect outfit. ♪ i'm going to start with the shirts. i had to wear something every single day, i'd probably go with something plain and simple. yeah. you don't want it to be so obtrusive that people are constantly remarking on your clothes. no, no, maybe. all right. got everything we need. time to try it on. ♪ i mean, this is it. i wore the outfit with a jacket on "cbs this morning" and without on cbsn. >> i'm in the "cbs this morning" newsroom. i have been here all week, been on the air all week. no