Breast development is something girls start to go through when puberty hits.
Between the ages 17 and 22, most girls body shape starts becoming more "womanly" with larger breasts and hips and a smaller waist - this may or may not be associated with weight loss or gain. It is a normal part of the maturation process and is not a cause for alarm. It is not a sign of sexual activity or use of hormones.
We don't actually stop maturing until we are around 21 (or slightly older). If you have gained weight that can also be the issue. Whether you have sex or not does not matter. Sex does not make the breasts grow.
its from the estrogen hormone in females
Projesterone
Yes. Too much hormone production can cause lactating of the breasts without being pregnant.
Intentionally, he undergoes hormone therapy.
Estrogen the hormone found in woman are the cause of breasts, and you develop breasts during or after puberty, when your hormones are at their highest peek.
It is more due to the hormone change in the body.
All men and women when sexually arroused is because of testosterone, than any other hormone.
Yes there are. Every pregnancy symptom is a result of the HCG hormone hun.
Testosterone is a male hormone and has no influence in the development of breasts (mammary glands), estrogen the female hormone does,
Testosterone.
Prolactin
There is no technique to grow breasts. The female hormone Oestrogen makes it happen naturally. The size is decided by your genes.