Of course, having a child (or three) is no guarantee against cancer, either. Two years ago, Marisa Weiss found something on her own mammogram.
"As soon as I saw the films myself I knew that it was a cancer there," she said.
"Was there a thought that went through your head when you saw that malignancy, when you knew?" asked Smith.
"Grandchildren," Dr. Weiss replied. "I have three kids, and I want to see those grandchildren."
Dr. Weiss is back at work now, cancer-free, and a stronger voice than ever for breast cancer prevention.
"We have to pay attention to this," she said. "We have about 1.3 million cases today worldwide. We expect that to double by the year of 2040. The breasts are telling us that we've got a problem out there, and we have to listen. We can't ignore it. There's too much at stake."
For all our ogling, for all of our fascination through the centuries, the breast is still in many ways a mystery. But that, too, is changing.
For her part, Timmie Jean Lindsey, the Texas great-grandmother, says she'll donate her silicone implants to science . . . someday.
"Don't want no autopsy, but they can take them," she told Smith. "But like I tell ya', I plan to live to be 100. I don't know what I'll be looking like, but I'm going to make it. I'm gonna try!"
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