Slim-Fast is a popular brand of weight loss shakes designed to help people lose weight by replacing certain meals. While Slim-Fast can be effective at promoting weight loss, it can also lead to various side effects.
Replacing meals with Slim-Fast shakes may result in fatigue or feeling weak because the body will have fewer calories available for use.
Slim-Fast may upset the stomach of some people due to the change in diet or to the artificial sweeteners used in some types of Slim-Fast.
Slim-Fast only helps with weight loss if the user eliminates more normal food calories from their diet than the shakes contain. If shakes are consumed in addition to a normal diet, they can contribute to weight gain.
Taking Slim-Fast as directed can promote weight loss, but unless reduced calorie levels are sustained, weight can easily return.
Slim-Fast may cause feelings of hunger since the body may demand more calorie intake. The body often adjusts to reduced calorie intake over time.