Female Breasts, what affects them?!

Female Breasts, what affects them?

**Warning these questions may be long**

As weird as this sound coming from a male, I was just curious about females' breast. Lately i've been thinking most breast come in different shapes and sizes and most are beautiful. And i've been looking at some breast messaging videos on youtube.com.
After looking at one of them, I saw cancer. And then soon was wondering what is good and bad for female breasts.
And so I ask you:

Are bras bad for the breast?
And is breast messaging really helpful?
Is it true that bras control the size and the cleavage size?

Thank you, and I aplogize for this question if it offended any female subjects.

I don't find your question offensive at all. I think it's good to want to know about our bodies, even the opposite gender's.

Bras can be good and bad. A properly fitting bra can help to reduce the sag that comes with age. It defies gravity, basically. Also, sports bras help to keep the connective tissue (fascia) from tearing during exercise. Breasts do bounce and that bounce can cause the fascia to tear.

A bra that is too tight can cause constriction. This can lead to vascular problems as well as calcifications. For larger breasts the worst things are skinny bra straps and lack of support. This will cause ruts in the shoulders where the straps dig in. This is also why I hate Victoria's Secret. Damn cute bras with useless skinny straps!

Breast massaging does help to get the blood flowing. It's good for any and all body parts, in fact, not just breasts. It will help to reduce the liklihood of embolisms and calcifications. It also feels quite nice, again, that goes for all body parts.

Breast massaging can help in terms of cancer as it can help you find a lump. It won't prevent cancer but it can help to find it and, thus, get it treated earlier.

Bras do not control the sizes of breasts unless they include pads. Even then the size is only increased as long as the pads are there. Cleavage is only effected by how much or little the bras squeeze the breasts together.