The metabolic syndrome is a cluster of symptoms associated with insulin resistance and known to precede the onset of type 2 diabetes. Overweight and obesity contribute significantly to the development of the metabolic syndrome. In fact, weight loss has a huge impact in decreasing the symptoms associated with the metabolic syndrome. Several studies have demonstrated that just by losing 7% to 10% of initial body weight is sufficient to have improvement in waist circumference, dyslipidemias (elevated triglycerides and low high-density-lipoprotein cholesterol), trunk fat, and plasma glucose. This paper underlines the importance of weight loss and type of diet in reversing the symptoms of the metabolic syndrome.