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Two D, or not two D? That is the question. Test your mammary with this quiz, and then head to <a href="https://www.breasthealth.org/" target="_blank">Breasthealth.org</a> to brush up on the crucial facts about breast health.

Two D, or not two D? That is the question. Test your mammary with this quiz, and then head to Breasthealth.org to brush up on the crucial facts about breast health.

How Much Do You Know About Breasts?

Breasts start to develop [in utero](http://www.livescience.com/4971-men-breasts.html) for both sexes! That’s when the nipples are erected and the breast bud is planted.

In the womb

According to [this 2013 survey](http://www.racked.com/2013/7/22/7659335/bra-size-increase), the average bra size of women in the U.S. is now a 34DD. Regardless of size, stay on top of your breast health!

34DD

The vast majority of breast implants don’t mess with your milk ducts, so it’s [totally fine](http://abcnews.go.com/Health/Parenting/story?id=8456137&singlePage=true) to breastfeed!

Yes! They can!

Strange but true: The left breast is typically a [little bigger](http://www.everydayhealth.com/columns/elizabeth-thompson-womens-wellness/important-facts-about-breasts/)! It’s actually super uncommon to have perfectly symmetrical breasts.

Left

Indeed, you can! Results from a [2009 study](http://www.scienceofrelationships.com/home/2011/12/16/breasts-are-best-can-women-orgasm-from-nipple-stimulation.html) indicated that some women have achieved orgasm from nipple stimulation. These lucky ladies’ brains are able to process genital and nipple stimulation in much the same way.

It's true!

While [less than 1%](http://www.breastcancer.org/symptoms/types/male_bc) of all breast cancer diagnoses are in men, they are certainly not immune.

He might

Women who have three alcoholic drinks per week have a [15% higher risk](http://www.breastcancer.org/risk/factors/alcohol) of breast cancer than those who don’t drink at all. Experts estimate that the risk of breast cancer goes up another 10% for each additional drink women regularly have each day.

About [1 in 8 U.S. women](http://www.breastcancer.org/symptoms/understand_bc/statistics) will develop invasive breast cancer in their lifetime — that’s a little more than 12%, and 1 out of 8 of your friends.

Research suggests that almost 50% of women believe breast cancer is primarily hereditary. However, in reality, only 5 to 10% of breast cancer diagnoses are genetic or hereditary.

Not true! There are things you can do to minimize breast cancer; eating well, exercising, and cutting back on alcohol are just a few examples.

If breast knowledge is a baseball game, you haven’t quite made it to first base yet. Time to nipple this one in the bud and educate yourself!

When it comes to breasts, you’re not TOTALLY clueless, just a late bloomer. That’s understandable — there are a lot of facts to juggle.

You definitely know your way around a pair of breasts, but you’re sagging behind the competition a little. The facts are out there — milk them for all they’re worth!

When it comes to breasts, you’re a genius. People are simply titillated by your superior knowledge. Keep it up!

All images from Thinkstock.

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How Much Do You Know About Breasts?

Stay abreast of breast health... Visit Breasthealth.org.

How Much Do You Know About Breasts?

Stay abreast of breast health... Visit Breasthealth.org.

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