The Science of Boobs

The Science of Boobs

Breasts. They provide nourishment for our
babies, they are one of the few organs not fully developed at birth, and of course are
a major obsession in western culture. Yet there is so much about breasts that isn’t
discussed or is deemed taboob, sorry “taboo”. So, what does science say about breasts? Forget water into wine – what about blood
into milk? Proteins, sugars, and fat are pulled from a mother’s blood supply to make milk,
and it is this action that has made mammals so successful. Unlike birds or reptiles, whose
young are dependent on parents to bring them outside food such as insects, mammals, from
the word mammary, access their nutrition at a young age from the secretion of a mother’s
milk. Breasts come in all shapes and sizes and though
there is a positive correlation between breast size and weight, genes also play a crucial
role in the size of boobs. 50% of the time one breast is larger than the other, most
commonly the left boob, known as breast asymmetry. This asymmetry is normal and though scientists
aren’t entirely clear why, a possible contributor is the hormonal changes that happen during
puberty. On top of this, the size of your breasts vary from week to week! Yup, the production
of estrogen and progesterone throughout the menstrual cycle changes the size of your breasts. Both men and women have nipples and mammary
glands, but usually only women have them develop at puberty. This characteristic is uniquely
human as other mammals breasts only enlarge during nursing. The ring of pigmented skin
surrounding the nipple is called the areola which is covered in little bumps called Montgomery’s
Gland. While lactating, the glands make oily secretions that keep the nipple lubricated
and may also release compounds to make the nipple seem yummy for a baby. The nipple isn’t composed of a single orifice
but has many tiny holes you cannot see with the naked eye. After having a baby, receptors
in the nipple detect when the baby begins to suckle, sending messages to the mother’s
brain, causing a release of oxytocin and continued production of prolactin. Oxytocin causes cells
that line the mammary glands to contract and is also known as the cuddle hormone, as it
enhances the bonding experience between mother and child. The hormone prolactin is essential
in making milk. This whole hormonal process can be triggered after only hearing a baby
cry, even if it isn’t your baby! Babies love breasts, but so do people. Research
has found that people spend more time observing large breasts with a certain hip to width
ratio – potentially explaining why breast augmentation surgeries are the most prevalent
form of plastic surgery, with 300,000 surgeries being performed in 2014…in America alone.
However, the same research shows that people prefer breasts of all different shapes and
sizes, and medium sized breasts were actually rated as statistically most attractive. Breasts
don’t only create joy for others, but also for oneself. Studies show that stimulation
of nipples enhanced sexual arousal in 82% of women and 52% of men. Interestingly an
fMRI scan that mapped the brain’s response to clitoral and vaginal self-stimulation,
found that the same areas lit up when a woman stimulated her nipples. Despite being an amazing source of both nutrition
and pleasure, breasts are incredibly vulnerable. Breast cancer is the most prevalent form of
cancer in North America. Cells that divide often are at a higher risk of mutations than
cells that don’t divide – and because breasts change and grow over the course of our lives,
these cells are frequently dividing. The hormone estrogen also stimulates breast cell division,
and there are environmental chemicals found in pesticides, industrial products, and even
our food that mimic estrogen and can influence cell growth, increasing the risk of breast
cancer. Research is discovering new risk factors of breast cancer such as breast density, age
of first pregnancy, and genetic predisposition to breast cancer genes such as BRCA1 and BRCA2.
This scientific knowledge can help increase prevention. Although they are vulnerable, they are incredible,
and regardless of shapes and sizes they are an essential aspect of sustaining human life
and defining us as a species. Thank you boobs. Wanna learn even more about boobs? Check out
our latest AsapTHOUGHT video where we debunk some myths about Why Women Have Breasts. Click
on the screen or use the link in the description. And subscribe for me weekly science videos.

100 Replies to “The Science of Boobs”

  1. The things is Boob is a word for the way you see them

    b from the left
    b from the right
    oo from the front.

  2. The narrator sounded off but I didn't care then 3:39 happened and I laughed out loud.
    I'm sorry honey but you got me laughing don't be mad or upset.

  3. No need to lie we know there is a lot of boys here it’s fine! Im a boy and I’m not ashamed for watching this YOU HEAR ME GIRLS!?! IM NOT AFRAID OF THIS VIDEO! AHAHAHAH :like if you aren’t scared of watching this video:

  4. Написать текст с большим количеством букв "с" и взять шепелявого диктора. Гениально.

  5. I didn't realise about her voice until I read the comments. I understood everything without getting annoyed lol. Also I think the way she talks is very cute.

  6. I love how everyone embraces lisps but make fun of this girl because everyone else is doing it, get a life. There's a difference between being a snowflake and having respect for people, your mother raised you better than that

  7. When you don't relate to anyone else in the comments bc your twelve and have large symmetrical boobs

  8. They can be your
    Loving sisters
    They can be your loving wifes/ partners
    They can be your caring moms
    and they can be your grannies
    They are the most gentle and lovable creatures they are women ☺️

  9. 99.8 % are dudes that just wanna see the titties
    .2 % are female or are people that are here for the science

  10. These comments are ridiculous, can we do the science of people acting like 5 year olds and sniggering at others for a bit of attention?

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