How do you feel about the diet plan called medifast.?

Meal replacement...: The Medifast plan works by restricting calories with meal replacements (such as shakes). Although, effective at reducing weight - these plans do not address the issues that led to weight gain, don't teach healthy food choices, may detrimentally affect metabolism, and ultimately end up with weight returning (often to more than it was before) when stopped. I'd advise adapting healthy clean eating!