Ikaria Lean Belly Juice Reviews, USA: Weight loss supplements are popular among those who are looking for a way to lose belly fat. These supplements can increase metabolism and reduce appetite, allowing those who take them to stick to a strict diet and exercise routine. However, it is important to remember that supplements alone cannot provide optimal results—they should be used in conjunction with a healthy diet and exercise program. Furthermore, weight loss supplements should only be used as part of an overall weight loss plan and should be taken with caution as some may have unknown side effects.