By Dr. Ayman
Most chronic diseases that shorten men's lives start quietly. Blood pressure creeps up, fasting glucose drifts toward the prediabetic range, and arterial plaque builds for years before anything hurts. This is why men's health after 40 is less about reacting to symptoms and more about catching numbers while they are still easy to change.
Men are also less likely than women to book preventive visits. Knowing which checks are evidence-based, and which hormone tests are worth asking for, makes each appointment count.
The most valuable routine checkups after 40 are cheap, quick, and focused on the heart and metabolism.
Blood pressure. A single clinic reading can be misleading. White-coat and masked hypertension are both common, so a week of home readings gives a truer picture. As we explained in our guide to measuring hypertension correctly, home readings of 135/85 mmHg or higher deserve follow-up.
Lipids, beyond LDL. The Canadian Cardiovascular Society recommends measuring lipoprotein(a) once in a lifetime because it is genetically determined. It also names non-HDL cholesterol and apolipoprotein B (ApoB) as among the best lipid markers of cardiovascular risk. A man with a "normal" LDL but a high Lp(a) carries a different risk than his panel suggests.
Blood glucose and HbA1c. The US Preventive Services Task Force recommends screening adults aged 35 to 70 who are overweight, about every three years if results are normal. For Asian American adults, it suggests a lower BMI cut-off of 23. Alcohol matters here too. A study we covered linked heavy drinking to higher fasting blood sugar in middle-aged adults.
Colorectal cancer. The USPSTF lowered the starting age for average-risk adults from 50 to 45. A first-degree relative with colorectal cancer usually means starting earlier.
Prostate cancer screening. This is where guidelines differ most, so a conversation beats a reflex test. The USPSTF calls PSA screening an individual decision between ages 55 and 69, and advises against it from 70. The American Urological Association goes further. It suggests a baseline PSA between 45 and 50, and screening from 40 to 45 for men of Black ancestry, men with relevant germline mutations, or men with a strong family history.
A baseline PSA in your 40s is useful for one reason: trajectory. A single value is a reference point. How it changes over several years tells your doctor far more. PSA can also be raised by benign prostate enlargement or prostatitis, so a high result calls for repeat testing and context, not panic.
Common low testosterone symptoms include fatigue, reduced libido, fewer morning erections, low mood, loss of muscle and more abdominal fat. Each has many other causes, including poor sleep, depression, thyroid disease and obstructive sleep apnea.
This is why the Endocrine Society's 2026 statement, which we reported on in July, sets a high bar for diagnosis. It requires both symptoms and consistently low testosterone, confirmed by at least two early-morning fasting tests. A common threshold is near 300 ng/dL. The Society also recommends CDC HoST-certified assays, because non-standardized tests can label the same sample "low" in one lab and "normal" in another. It does not support routine screening of men without symptoms.
Good hormone testing for men looks beyond a single total testosterone number:
Free testosterone and SHBG. Sex hormone-binding globulin tends to rise with age. Total testosterone can look normal while the free, active fraction is low.
LH and FSH. These show whether a low result starts in the testes or in the pituitary, which changes the work-up.
Thyroid function, fasting insulin and glucose. Insulin resistance and excess visceral fat are linked to lower testosterone, and the Endocrine Society lists obesity among the reversible causes to address first.
A medication review. Opioids and corticosteroids can suppress testosterone.
Hormones rarely change in isolation. Insulin, cortisol, thyroid hormone and testosterone influence one another, and sleep and stress affect all of them. Clinicians working in hormone care often find insulin or cortisol problems alongside low testosterone. Yet these markers are usually checked separately, often by different clinicians.
For men who want the full picture reviewed together, a men's health clinic that interprets hormone, metabolic and gut function testing side by side can help connect symptoms to underlying factors. Peak Health VIP in Oakville, Ontario, takes this approach. Its physician-guided assessment reviews testosterone alongside cortisol, thyroid, insulin and vitamin levels before any personalized treatment is discussed.
The recommended medical tests for men over 40 depend on personal and family risk, but this is a sensible starting point to discuss:
To get more from the visit, bring a one-week blood pressure log, a list of medications and supplements, and your family history of heart disease, diabetes and cancer. If hormone tests are ordered, ask for an early-morning draw.
Men's health after 40 is not about chasing every test. It is about picking the right ones, at the right time, and tracking the trends. For more on prevention, metabolic health and the latest research, explore our Fitness and Wellness section.
This article is for general education and is not a substitute for individual medical advice. Talk to your doctor about which tests suit you.
MBTpg//MSM
