Do Implants Cause the Same Weight / Shoulder Pull as Natural Breasts?

For a given volume, saline implants weigh slightly more than breast tissue and silicone implants weigh slightly less.

The answer is yes. The weight is about the same for saline , silicone or fat. In other words 500cc breast  implants whether made of silicone or saline or 500grams of fat  as use  in natural breast augmentation surgery , will weight about 1.1 pound each. However,for most  natural breast augmentation patients, the amount of fat grafted during a single operation is a about 150cc to 250cc per breast. It is very rare to graft 500cc of fat to a single breast in one procedure during natural breast augmentation.This is because high complication rate associated with large fat transfer to breast in a single setting.

An implant placed under muscle/fascia (including a textured implant placed in a dual plane pocket) is held close to the chest wall (rib cage) by the muscle and/or fascia.  Normal breast tissue or Implants over muscle do not have this same support, and are farther from your center of gravity, and thus pound for pound, are likely to feel heavier than sub muscular/fascial implants.