Chapter II
Your 40s — screenings get real
Waistlines shift, recovery slows, and guidelines start naming colon and prostate conversations explicitly. This decade rewards scheduling—not postponing.
Metabolic pivot
Insulin resistance and central adiposity accelerate for many men. Waist circumference above guideline thresholds (often cited around 40 inches / 102 cm in men—confirm with your clinician) warrants A1c and lipids even if weight feels “stable.”
Colon conversation
Many guidelines now begin colorectal screening at 45 for average risk; earlier with family history or symptoms. Stool-based tests and colonoscopy differ in intervals and follow-up—ask which path fits you.
Prostate & urinary changes
Benign enlargement can alter stream; PSA screening is a shared decision based on age, risk, and preference—not a mandatory meme. Blood in urine always deserves evaluation.
Mental load
Peak earning years overlap with caregiving and aging parents. Depression and anxiety in men may look like anger, numbness, or drinking more—screening questionnaires in primary care are normal tools.