SENSA, REALLY??

So I'm scrolling thru my home page on FB and an old schoolmate posts asking for opinions on Sensa and if anyone has tried it. Anyone who knows me knows I sounded off loudly right away on that...as I lost my weight by exercise and portion control and have kept it off for 20 years..and my old classmates saw me lose the weight!

I'm sure I ticked her off by sounding off, especially when I asked why anyone would wanna sprinkle silica on their food, especially someone who was always so health conscious she never smoked or partied in high school. I guess I really need to vent here. Has anyone tried this stuff? Had LONG TERM success with it? And if you did, did you even research to see what you were sprinkling on your food and see if there were any side effects?