Hormonal changes, cardiovascular risk, and metabolic shifts are all part of aging for men. The decade after 40 is often when these changes begin to become clinically significant — and when proactive medical attention can make the greatest difference in long-term health outcomes. Dr. Cohen shares key screenings, lifestyle adjustments, and treatment options that help men stay strong and healthy well into their later years.

Hormonal Changes: Understanding Testosterone Decline

Testosterone levels in men begin to decline gradually after the age of 30, with the rate of decline accelerating for many men in their 40s and beyond. This process — sometimes referred to as andropause or late-onset hypogonadism — can manifest as fatigue, reduced libido, changes in body composition, mood shifts, and decreased motivation.

It is important to note that not all men experience clinically significant testosterone decline, and symptoms alone are not sufficient to diagnose hypogonadism. A thorough evaluation including laboratory testing and a careful review of symptoms is necessary to determine whether hormonal intervention is appropriate. For men who do have clinically low testosterone, treatment options including testosterone replacement therapy can be highly effective when properly managed.

Cardiovascular Risk: The Decade That Matters

Cardiovascular disease remains the leading cause of death in men, and the risk profile for most men begins to shift meaningfully in their 40s. Factors including blood pressure, cholesterol levels, blood sugar, body weight, and family history all contribute to overall cardiovascular risk — and all are modifiable to varying degrees.

A comprehensive cardiovascular risk assessment at this stage of life should include a full lipid panel, fasting glucose and HbA1c, blood pressure evaluation, and a discussion of lifestyle factors. For men with elevated risk, additional testing such as a coronary artery calcium score may provide valuable information about subclinical atherosclerosis.

The goal is not to generate anxiety, but to generate clarity — so that men and their physicians can make informed decisions about prevention and, when necessary, treatment.

Metabolic Health and Body Composition

Many men in their 40s notice changes in body composition — increased abdominal fat, reduced muscle mass, and a metabolism that no longer responds to diet and exercise the way it once did. These changes are not simply cosmetic. Visceral adiposity — fat stored around the abdominal organs — is strongly associated with insulin resistance, inflammation, and cardiovascular risk.

Addressing metabolic health requires a multifaceted approach that includes regular physical activity (particularly resistance training), attention to dietary quality, adequate sleep, and stress management. In some cases, laboratory evaluation may reveal underlying contributors such as thyroid dysfunction or insulin resistance that warrant specific intervention.

Cancer Screening for Men Over 40

Several important cancer screenings become relevant for men in their 40s. Colorectal cancer screening is recommended beginning at age 45 for average-risk individuals, with earlier screening for those with a family history. Prostate cancer screening with PSA testing is a nuanced decision that should be made in consultation with a physician, taking into account individual risk factors, family history, and personal preferences.

Skin cancer screening, particularly for men with significant sun exposure history, is also an important consideration. Regular full-body skin examinations by a dermatologist are recommended for men at elevated risk.

Mental Health and Stress

Men in their 40s often face significant professional and personal demands — and the mental health dimension of this life stage is frequently underaddressed. Chronic stress, sleep disruption, and unrecognized depression or anxiety can have meaningful effects on physical health, including cardiovascular risk, immune function, and hormonal balance.

A comprehensive approach to men's health must include attention to mental and emotional wellbeing — not as a separate concern, but as an integral part of overall health.

The Value of a Dedicated Physician

Navigating the health landscape after 40 is most effectively done with a physician who knows you well — your history, your risk factors, your goals, and your lifestyle. At Calabasas Medicine Group, Dr. Cohen provides men with the kind of thorough, personalized care that this stage of life demands, with the time and attention to address the full picture of health rather than a single concern in isolation.