Abstract
Obesity and overweight are contributing factors for diseases such as type 2 diabetes mellitus (T2DM), hypertension, hyperlipidemia, and ultimately, cardiovascular (CV) disease. Obesity is imposing an increasing health burden in rich and poor nations, with almost 30% of people globally now either obese or overweight - a staggering 2.1 billion. The link between obesity and T2DM is widely held to involve two adverse effects: obesity-induced insulin resistance and β-cell failure. This “unified field theory” raises questions about whether defects favoring progressive weight gain and metabolic impairment also contribute to β-cell decompensation. The concept of weight-centric management of T2DM is considered justified because of the strong negative impact of obesity on the effects of treatment of diabetes. Two pharmacotherapy options are considered: drugs developed primarily for blood glucose control that also exert a favorable effect on body weight and drugs developed primarily to induce weight loss that also have a favorable effect on glycemia. Treating hunger counter-regulatory mechanisms will have an additional effect on glucose control in T2DM. This narrative review addresses advances in pharmacotherapy for the management of obesity and obesity-related co-morbidities, with a focus on T2DM. It is also important to identify the correct balance between weight-centric and glucose-centric management of T2DM.
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