The female family of my mothers side are all heavy chested, so I sort of conclude it's part genes.
Very awkwardly I asked my sis how large her breasts were at age 17, double D's apparently. And cup F at 19yrs, and she's only 5 ft 3" tall.
One of my girlfriends has large breasts too. At 16yo she also had DD's and she weighed them.. <drumroll> 2 kg each!! At 22yo they still look good though. But both my sis and my friend have back problems, clothing problems, and have issues with sporting. They both have thought of reducing but it's not always insured (clear medical reason only). I guess it's easier if you're rich??
Large natural breasts are pretty common here, which is why I stay ;)
I forget the name of the disorder but I knew a girl who had abnormal breast growth from the age of 11 and by the time she was 15 they were such a size that she had major back problems and mostly couldn't walk and had to be in a wheelchair. At 16 she had reduction surgery to a D and with physiotherapy she was soon able to do without the wheelchair and live normally again. She was a tiny person so even D's looked pretty huge on her so no loss really. I think Ariel has probably had the same condition but not to such extremes.
>>31156 Junk foods have indeed brought on puberty earlier in many but I don't think that is the cause of the condition that Ariel or my friend had.
Boys & girls who are a bit heavier than average tend to have a bit more in the upper regions. I do believe the crap they inject in our meat (cows, pigs, etc) can have a negative or at least some impact on us humons. But considering the statement below, I can't rule out it's also due to the fact we live longer. Probably due to (advanced) science, healthier environment. Also genes have an impact. I would like to see her mom ;)
"The average age at which the onset of puberty occurs has dropped significantly since the 1840s.This was dubbed 'the secular trend' by J. M. Tanner. In every decade from 1840 to 1950 there was a drop of four months in the average age of menarche among Western European females. In Norway, girls born in 1840 had their menarche at an average age of 17 years. In France, the average in 1840 was 15.3 years. In England, the average in 1840 was 16.5 years. In Japan the decline happened later and was then more rapid: from 1945 to 1975 in Japan there was a drop of 11 months per decade.
A 2006 study in Denmark found that puberty, as evidenced by breast development, started at an average age of 9 years and 10 months, a year earlier than when a similar study was done in 1991.
Scientists believe the phenomenon could be linked to obesity or exposure to chemicals in the food chain..."
When scientists believe we should get worried. Facts! Science = facts! Not believes.
I see she's only 17. That's a lot of boob for 17. Did you ever read the articles about the junk in foods that are causing this; girls getting their periods at 9 and 10 and boobs coming way out at 10 and 11? I never read anything about what happens to males.