Related on TestTube:
What Are Breasts Really For?
What Your Favorite Breast Size Says About You
Each week on TestTubePlus, we pick one topic and cover it from multiple angles. This week's topic is breasts. During the course of this five-part series, hosts Trace Dominguez and Amy Shira Teitel will be diving deep into the science, history and more of boobs. So far, Trace and Amy have discussed what breasts are for and why (most) humans only have two nipples, the importance of breastfeeding, and how milk gets made. and what your favorite breast size may say about you. Today's topic is a bit more serious. In it, they explore why is breast cancer so prevalent, and why it's imperative that we are more aware of our breasts.
Breast cancer is defined by the American Cancer Society as appearance of a malignant tumor--growth of irregular cells--in the breast. In the U.S., 99 percent of breast cancer occurs in women, and only 1 percent in men. Among women, about 12 percent of them are expected to develop breast cancer in their lifetime--that's about one in eight women. Why is it so common? In part, it's because of these terrifying statistics: fear of the diseases prevents as many as one in three women from getting mammograms or performing routine breast self-exams. Scientists know that there's a genetic link: women with a gene called BRCA1 have an increased risk for breast and ovarian cancer. BRCA1 and BRCA2 are thought to keep cancer in check by repairing damage to DNA. DNA tests for these genes can help women know if they're more likely to get breast cancer but it's not a guarantee.
TestTube Plus is built for enthusiastic science fans seeking out comprehensive conversations on the geeky topics they love. Each week, host Trace Dominguez probes deep to unearth the details, latest developments, and opinions on big topics like the ocean, porn, exercise, stereotypes, fear, survival, dreams, space travel, and many more.
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Preferred female body proportions among child-free men (NCBI)
"Based on conceptual extrapolations from sociobiological models concerning the significance of secondary sex characteristics as markers of a female's capacity to produce and nurture offspring, we reasoned that men's greater unwillingness to reproduce would be linked to preference for a female body type characterized by the relative absence of such markers."
The Cleavage Countdown: 8 Facts About Breasts (LiveScience.com)
"The quintessential embodiment of female sexuality, breasts have fascinated and mystified since the beginning of time. From the biology that makes breasts, and breast-feeding, possible, and the odd boob changes that occur with motherhood to historical perceptions of the hourglass shape, LiveScience the art and science of breasts."
Men Vs. Women: Our Key Physical Differences Explained (LiveScience)
"Sexual dimorphism" is the scientific term for physical differences between males and females of a species. Many extreme examples exist: Peacocks far outclass peahens, for instance, while female anglerfish both outsize and outwit their tiny, rudimentary, parasitic male counterparts."
Breasts are barrier to exercise (University of Portsmouth)
"Nearly one in five women say their breasts stop them from participating in physical activity, new research reveals. The research also found that physical activity levels weren't influenced by breast size, which suggests the breast could be a barrier to exercise for women across all bra sizes."