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 , what your favorite breast size may say about you , and why is breast cancer so prevalent.
Cleavage is the narrow depression or hollow between human breasts. The top portion of cleavage may be accentuated by clothing such as a low-cut neckline that exposes the division. Joseph Breen , head of the U. The term was explained in Time magazine on August 5, In many cultures, though not all, men typically derive erotic pleasure from a cleavage display. This tendency has been attributed to many reasons including evolutionary psychology , a patriarchal revolution, and dissociation from breastfeeding. Since at least the 15th century, women in the Western world have used their cleavage to flirt, attract, make gender statements, and assert power.
From Venus to Katie Price: A brief history of the breast
The Sun , with a wink at its readers and a jeer at its critics, indulged last week in a bit of traditional British seaside postcard humour when it appeared to stop featuring topless women on Page 3 , before bringing them back on Thursday. This was not always the case, however. The classicist Mary Beard points out that, in statuary at least, the most significant parts were once male.
Women who started menstruating having periods younger than age 12 have a higher risk of breast cancer later in life. The same is true for women who go through menopause when they're older than Over the past 15 years, girls have been starting puberty at younger ages. Breast development has started even earlier than menstrual periods. This unexpected shift has been attributed to the obesity epidemic and broad exposure to hormone disruptors, since a rise in hormones triggers the onset of breast development and puberty.