Cosmetic fillers have become extremely popular worldwide for enhancing facial features, smoothing wrinkles and plumping lips. But a new medical study has raised concerns that these procedures are not as harmless as they appear. Research presented at the Radiological Society of North America (RSNA) reveals that filler injections can sometimes enter blood vessels, block circulation, and lead to severe complications such as blindness, necrosis, tissue death or even stroke. Health experts now war