I am 17 years old I am 5'4 and I weigh 172 lbs. My breast size is 38D will my breast size go down if I lose weight?

I think it
is great that you are taking the initiative to lose weight.



Most women
who undergo a significant weight loss will see a change in their breast size.
How much the breast size changes depends upon what percentage of the breast is
composed of fat, versus breast tissue; and how much weight loss occurs.



Body Mass
Index (BMI) may not be the most accurate indicator for every individual, but it
does give some idea as to the amount of body fat a person has, based upon
his/her height and weight. Your BMI is 29.5 – the very high end of the “overweight”
category; the “obese” category starts at a BMI of 30. A 30 pound weight loss
would put your BMI at the upper end of the “normal weight” category. With that
amount of weight loss I think you will see some decrease in breast size; and
with further weight loss, probably even more.



Heavy
drooping breasts can be very debilitating for many women and are a source of
neck pain, shoulder pain, back pain, poor posture, and decreased activity
levels. Breast reduction can improve many of these symptoms, improving the
quality of life for such women; but it does not correct the obesity that many
of these women have.



In addition
to a smaller breast size, weight loss will also help you avoid potential future
health problems, and I am sure you will feel better overall.



Best
wishes, Ken Dembny

yes your breast size will go dowm if you  lose  weigh because breast  have a fat component,  but you also consider that they will be more falls too.