Weight Loss

Muscle Loss & Drugs Like Ozempic – What is the Evidence?

The advent of GLP-1 receptor agonists, such as semaglutide (marketed as Ozempic and Wegovy), has brought promising prospects for weight loss and overall metabolic health improvement (Kim & Kim, 2020). These medications have demonstrated their effectiveness in shedding unwanted pounds and potentially enhancing cardiovascular and metabolic well-being. However, this scientific inquiry delves into a pertinent concern: does the pursuit of weight loss through these pharmacological interventions come at the expense of one’s invaluable muscle mass (Srikanthan & Karlamangla, 2014)? This article will examine the current body of evidence on the impact of GLP-1 receptor agonists on muscle mass and strength, shedding light on whether these benefits indeed come with a price (Ashtary-Larky et al., 2020).

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How “Ozempic” Works – Weight Loss, Weight Regain, & Neuroscience

How do drugs like Ozempic (semaglutide) cause weight loss? What happens when someone comes off of these drugs? In this episode, we discuss how these drugs (GLP-1 receptor agonists) target specific areas in the brain to suppress appetite and facilitate weight loss. We also discuss clinical trials data suggesting that these drugs and/or the weight loss that they facilitate may have cardioprotective effects. Lastly, we will also examine evidence regarding weight regain when coming off of these drugs and common side effects.

How Fats & Carbs Drive Food Intake

Highly processed foods have been shown to lead to weight gain and are thought to drive intake through several mechanisms. Recent research suggests that the effect of combining fats and carbs on appetite might be more than the sum of their individual effects. Highly processed foods, accordingly, might simulate increased intake via the ratio of macronutrients.

How Ultra-Processed Foods Drive Weight Gain

Growing scientific evidence suggests that highly processed foods are associated with increased risk of disease. Until recently, scientists were unable to study directly the effects of highly processed foods on humans. In this episode, we review one of the first highly controlled scientific trials demonstrating that ultra-processed foods lead to weight gain.

How Overeating Rewires Our Brains – The Neuroscience of Obesity, Weight Gain, & Weight Loss

Some of the earliest changes in obesity are invisible – and they start in the brain. Of particular concern, many of the brain changes that accompany obesity bear striking resemblance to those that occur in brain injury. In this episode, we discuss how overeating can lead to inflammation and neuron dysfunction in specific parts of the brain that control appetite and energy regulation. We review the neuroscience of appetite regulation, energy expenditure, and body fat regulation. Topics include hypothalamic dysfunction of body fat regulation, leptin resistance, neuro-inflammation, and physical changes in the hypothalamus involving microglia (the immune cells of the brain). We also review what is known about avoiding and reversing these changes.