Rapid weight loss on popular drugs could ‘starve’ the brain, expert warns

Key Points:

• Experts caution that rapid weight loss and severe caloric restriction from GLP-1 weight-loss drugs like Ozempic and Wegovy may deprive the brain of essential energy and nutrients, potentially harming brain health.
• Dr. Tommy Wood explains that brain health depends on energy availability, with both excess energy (from obesity) and insufficient energy (from extreme dieting) posing risks to brain tissue and function.
• While GLP-1 medications can improve cognitive function in cases of metabolic disease by lowering blood pressure and blood sugar, extreme caloric deficits may cause the brain to consume its own tissue to meet energy needs.
• Muscle loss during GLP-1 treatment often reflects fat loss within muscles rather than true muscle weakening, but chronic under-eating can deprive the brain of critical nutrients like omega-3s, iron, and protein.
• To protect brain health during weight loss, Wood recommends resistance training twice weekly and ensuring sufficient intake of neuro-nutrients such as B vitamins, vitamin D, iron, and omega-3 fatty acids.