There are numerous pros and cons to following one of those diet programs that require you to replace all of your meals with shakes or smoothies. The pros are that you are consuming all of the nutrients you need in controlled portion sizes. These shakes have an extremely thick consistency which helps to curb your appetite and which make you extremely full. The cons of an all-shakes diet is that you do not get to eat any solid foods, and this can take its toll and get very difficult for you, when faced with the temptation to cheat on the diet and succumb to eating solid foods. Need a better diet program? Go to The Diet Solution Review for more info and help.