BMI, waist-to-height ratio and body-fat percentage answer different questions. Used together and interpreted in context, they can describe risk and progress more accurately than any one number alone.

The first 12 weeks are a period of assessment, adjustment and habit-building. The priority is a safe, tolerable plan that protects nutrition and function—not the fastest possible change on the scales.

Several prescription medicines are licensed for weight management in the UK. They work in different ways and are not interchangeable. The right option depends on eligibility, medical history, treatment goals, side effects and ongoing clinical review.

A proper weight-management assessment does more than calculate BMI or approve a prescription. It establishes your health risks, goals, previous experience and treatment needs before building a monitored plan.

Obesity is associated with lower testosterone in some men, and meaningful weight loss can improve levels. Diagnosis still requires compatible symptoms and properly collected repeat blood tests.

Weight loss can include lean tissue as well as fat. Men can reduce that risk by combining progressive resistance exercise, adequate protein and energy, and monitoring that looks beyond the scales.

Weight loss may improve erections in some men living with overweight or obesity, particularly when vascular and metabolic health improve. Erectile dysfunction still deserves assessment rather than being attributed to weight alone.

Obesity is associated with reduced fertility and poorer semen measures in some men. Weight loss may improve reproductive health, but the evidence is variable and assessment should not be delayed while waiting for a target weight.

Reduced appetite can support weight loss, but eating too little can compromise hydration, protein, micronutrients and muscle. Use a simple food hierarchy and speak to your prescriber if symptoms prevent adequate intake.

Medical weight loss is structured clinical care, not a prescription in isolation. It combines assessment, nutrition, activity, behaviour change and, when appropriate, treatment with ongoing review.