Why the Weight Won't Shift
Sajeel Abrar GPHC-2066354 Independent Prescribing Pharmacist · 12/09/2025 · 2 min read
How hormones, stress, and ageing affect fat loss and why it's not just about willpower.
It's not just calories in vs calories out
You've probably heard that losing weight is simple: eat less, move more. But for many men and women, it's not that straightforward. As we age, our metabolism shifts, our hormones change, and stress, sleep, and emotional factors all influence how our bodies respond to food and movement. This is especially true after age 35–40 when hormonal changes can blunt your body's fat-burning response, making traditional calorie-cutting less effective.
The role of insulin resistance
Insulin is a hormone that helps your body process sugar. But when we gain fat—especially around the belly—the body can become resistant to insulin's effects. That means higher blood sugar, more hunger, and easier fat storage. This is called insulin resistance, and it affects men, women with PCOS, and many people who don't realise their metabolism has changed. It also makes willpower alone ineffective—your body is working against you.
How stress and sleep sabotage fat loss
Stress hormones like cortisol encourage your body to hold onto fat. Poor sleep worsens cravings, reduces your ability to regulate appetite, and increases late-night eating. If you've been pushing yourself but feel tired, inflamed, or stuck—this could be why.
GLP-1s target the root cause
GLP-1 receptor agonists like Wegovy (semaglutide) and Mounjaro (tirzepatide) don't just suppress appetite. They improve insulin resistance, delay gastric emptying (so you stay fuller longer), and lower food noise—that constant battle between cravings and control. For many patients, this is what makes the difference not just in weight loss, but in mental energy and sustainability.
The Saha approach
At Saha, we don't shame you into weight loss. We look at your biology, your story, your life. We combine clinical expertise with human empathy and—if GLP-1s are suitable—we prescribe them with a full lifestyle and review package.
The takeaway
Weight loss resistance is real. It's not about failure or laziness—it's often about hormones, stress, sleep, and insulin. With the right medical support, your body can change. We're here to help it happen.
"If you've tried the gym, the diet, and the apps and the weight still won't move—there's more going on."
Written by Sajeel Abrar, Independent Prescribing Pharmacist • GPhC: 2066354
Last updated: 18 April 2026