Necklace worn : Bought at www.thecurrentcustom.com ( Cannot remember the designers name .. sorry ) but should be easy to find. Its the five foot sterling silver chain. This video is of my opinion only On weight loss, medifast is a program made up of 5 smallers pre-packaged meals as well as a "lean & green" meal made up of aprox 6 ozs protein & greens ( salad etc) If you would like more information, please message me . I will send you in the way of my (free) health coach who can better inform you on the ins and outs. I am not employed by Medifast, nor do I recieve anything free or sponsored by them at all. Everything i get from medifast, I pay for myself. All opinions are my own.