Can natural breast enlargement systems be dangerous?

The Brava system is not dangerous, and can be combined with fat transfer to the breast for augmentation, although the results are usually minimal (eg a half cup size).  I would consult with a plastic surgeon to see whether this option is applicable for you.

The brava system is not dangerous, but I have yet to see any really good results from using it.  I think it's a waste of time and money.

The Brava system is safe, but not so effective for true augmentation.  Simple breast augmentation with the most biocompatible, non-reactive, durable implant known to man, silicone gel, is safe, effective, long-lasting, and in all conducted studies consistently generates very high levels of patient satisfaction.  Breast enlargement with FDA approved cohesive gel implants is so much easier than putting that Brava device on to suck on your breast skin every night for months.  Results are beautiful, natural, safe, and long-lasting.