The evolutionary origins of this trait have been the focus of many hypotheses, which variously suggest that breasts are a product of sexual selection or of natural selection due to their putative role in assisting in nursing or as a thermoregulatory organ.
The Benefits of Permanent Breasts
Some claimed evolution favored “pendulous” breasts — as scientists dryly describe them — because they gave babies something to cling to like handle bars. Others suggested permanent breasts evolved as an energy reserve, lumps of fat to be tapped when food is scarce.
Each breast contains many glands and other structures that allow them to perform their functions. Namely, the primary biological function of the breast is to produce milk to feed infants. However, the breast can also be a symbol of femininity and play a role in sexual attraction and pleasure.
Human females have permanent breasts because the structure of the breast echoes genital swellings in lower primates. There's a species of baboon who's breasts swell when they ovulate and it's believed that our ancestors were similar. Breasts became permanently enlarge when hidden ovulation developed in our evolution.
When the ovaries start to produce and release (secrete) estrogen, fat in the connective tissue starts to collect. This causes the breasts to enlarge. The duct system also starts to grow. Often these breast changes happen at the same that pubic hair and armpit hair appear.
Breast development during puberty
2.1 Stage 1 This stage begins at about 8-12 years old, the nipples just begin to pop up, pink circle appears. This process takes quite a long time.
No, it's not true. Touching or massaging breasts does not make them grow. There's a lot of wrong information about breast development out there. Some of the things you may hear are outright cons — like special creams or pills that make breasts bigger.
Marriage doesn't affect breast size
While no one knows exactly who started the rumor that marriage increases breast size, people have passed around this myth for centuries. The most likely explanation for this is conceiving a child or traditional weight gain after marriage.
A girl's breasts are typically fully developed by age 17 or 18, however in some cases they can continue to grow into her early twenties.
Hormone shifts
This sensitivity is known as cyclic mastalgia or fibrocystic changes. Around 50 percent of all women over the age of 30 experience this. Right before your period starts, your breasts may feel especially tender if you press on them, or they may ache.
Breast massage therapy can ease the breasts' sensitivity and provide better blood circulation to the breast. Gentle massage can also increase milk supply. Massage can help warm up and loosen the tissues around the breasts' milk ducts and help the milk flow.
Stimulating, caressing or simply holding breasts sends nerve signals to the brain, which trigger the release of the 'cuddle hormone' called oxytocin, a neurochemical secreted by the posterior lobe of the pituitary gland in the brain.
They have ligaments and connective tissue. When the gravity pulls the breasts down, those ligaments and the skin can stretch, and so the breast then droops. This depends on the elasticity of your skin and of your ligaments, as determined by your genes and diet, and also on normal aging processes.
Generally, the A cup is considered the smallest available but for some this is still too big and compensating with a smaller band size won't help. If you want something that's going to fit your form you'll have to go down a level to an AA or even AAA cup.
As a woman gets older, the ligaments that make up the breast tissue stretch and lose elasticity. As a result, breast fullness is compromised as the underlying support system of tissue and fat diminishes. A change may be particularly evident during menopause.
We found that the skin of the superior quadrant was the most sensitive part of the breast, the areola was less sensitive, and the nipple was the least sensitive part. The cutaneous sensibility of all tested areas decreased significantly with increasing breast size and increasing breast ptosis.
On the basis of published data and results from this study, it is recommended that patients with a cup size>or=D or a bra size>or=18 could be categorized as having large breasts, with all other patients considered average in size.
The fact is that stimulation of the breasts is wonderful way to increase your arousal, and possibly the intensity of your orgasms. Sensitivity can vary quite a bit from woman to woman, with smaller breasts on average being more sensitive than larger breasts.
In most cases, sore nipples are caused by hormonal changes from pregnancy or menstruation, allergies or friction from clothing. In rare cases, it can be a sign of a serious disease like breast cancer. Your healthcare provider should evaluate any pain that's accompanied by discharge or lumps as soon as possible.
Breast cysts.
If you find a breast lump that feels round, smooth and firm, it could be a cyst — a dilated milk duct filled with fluid. A breast cyst can be large or small, and the surrounding breast tissue may be tender. A breast cyst may appear before your menstrual period and get smaller or disappear afterward.
Most people naturally have one breast bigger than the other and this is normal. Changes to look for: a new lump or thickening in your breast or armpit. a change in size, shape or feel of your breast.
Young women usually have dense breasts because their milk systems might be needed for feeding babies. Sometimes this thickness is felt as a lump or a mass of tissue. As women age, their milk systems shrink and are replaced by fat. By menopause, most women's breasts are completely soft.
Breast cysts: Fluid-filled sacs form when fluid becomes trapped in the milk ducts. Cysts are common in premenopausal women. Fibroadenomas: This benign (noncancerous) lump is the most common breast tumor in young women (20s and 30s). Fibroadenomas are most common during a person's reproductive years.
They Get Bigger
Thanks to the triple whammy of weight gain, swelling from estrogen spiking, and inflammation (which increases in the body in your 40s), you might have a sudden need to go bra shopping.