>> well, the nccn, the national comprehensive cancer network has guidelines on this type of thing, in terms of recommendations. primarily, they recommend if you have brcamutations to consider it, even if your family history it not very strong, you may consider it. because we don't know all the genes that are responsible for breast cancer. >> the overwhelming majority of women who develop breast cancer don't have a family history of the disease. they are the family history. they become that. >> but for me, i feel like my stop watch is set to zero. i feel like my life is ahead of me now, and now there is a 1% risk, lower than the general population. now i can work with my diet and exercise program and really give myself the fighting chance that what happened to my mom and my aunt and my father, who died of cancer, too, and my grandmother, won't happen to me. i could be around for my kids. >> it is a remarkable story, and i love that hitting the reset button. we should all do that. i think people are really going to enjoy this conversation. allison gilbert, mark smith, thank you so much

>> well, the nccn, the national come pre hencive cancer network has guidelines on this type of thingconcerning recommendations. they recommend if you habrca mutations, you might consider it. even if you don't. you might consider it. we don't know awe the genes that might cause breast cancer. >> one thing else i want to point out again. our audience may realize this. but the overwhelming majority of women who develop breast cancer don't have a history of the family disease. they become that. >> for me i feel like my stopwatch has been set to zero. i feel like my life is ahead of me and i think the risk now is 1% breast cancer risk, lower than the general population. now i can work with my diet and scher size program and give myself that fighting chance of what happened to my mom and aunt and my father and my grandmother, it won't happen to me. >> it's a remarkable story. i love that. hitting the reset button. allison gilbert, dr. mark smith, thanks so much for joining us. >> thank you. >> thank you. >>> coming up, the astronaut who did the first triathlon in space. she raced against m