Articles & Experts

Men’s Health: The Fourth Decade

Sunday, July 06, 2025

by Adam Irvine - Physicians Office Resource 

Introduction

The decade of the 40s marks a transitional phase for many men — biologically, psychologically, and socially. While many remain outwardly healthy and active, this age group often begins to experience the early manifestations of chronic conditions that will shape their future health. For family physicians, this decade presents a critical opportunity for targeted intervention and preventive care. 

This article outlines the most common health concerns for men in their 40s, recommends evidence-based screenings and diagnostics, and provides guidance for initiating lifestyle counseling and treatment strategies that align with current guidelines.

Common Health Concerns in Men in Their 40s 

  1. Cardiovascular Disease Risk

Cardiovascular disease (CVD) remains the leading cause of death for men in the U.S. Although clinical manifestations like myocardial infarction are more common in later decades, subclinical atherosclerosis often begins in the 30s and 40s.

Risk Factors to Assess:

  • Hypertension
  • Hyperlipidemia
  • Smoking history
  • Diabetes or prediabetes
  • Family history of premature CVD
  • Obesity and sedentary lifestyle

Screening Recommendations:

  • Blood pressure: Every year, or more frequently if elevated
  • Fasting lipid panel: At least every 5 years, more often with risk factors
  • HbA1c or fasting glucose: Every 3 years or as indicated
  • ASCVD risk score: Calculate to guide statin therapy

Treatment:

  • Lifestyle modification is the first line (diet, exercise, smoking cessation)
  • Pharmacologic treatment per USPSTF and ACC/AHA guidelines
  1. Weight Gain and Metabolic Syndrome

 

Many men gain weight during this decade due to declining metabolism and decreased physical activity. Metabolic syndrome — defined by central obesity, hypertension, dyslipidemia, and insulin resistance — increases risk for CVD and type 2 diabetes.

Clinical Markers:

  • Waist circumference >40 inches
  • Fasting glucose >100 mg/dL
  • Triglycerides >150 mg/dL
  • HDL <40 mg/dL
  • Blood pressure ≥130/85 mmHg

Management Strategies:

  • Nutrition counseling (consider referral to a dietitian)
  • Exercise prescription (150 minutes/week moderate activity)
  • Behavioral therapy for sustained weight loss
  1. Mental Health: Depression, Anxiety, and Stress

Men in their 40s face career pressures, relationship challenges, and the psychological implications of aging. Unfortunately, men are less likely to seek help for mental health concerns, and depression may present with irritability or somatic complaints rather than low mood.

Screening Tools:

  • PHQ-9 for depression
  • GAD-7 for anxiety
  • Substance use screening (AUDIT-C, DAST)

Treatment:

  • Cognitive behavioral therapy (CBT)
  • Selective serotonin reuptake inhibitors (SSRIs)
  • Encouraging open conversations about stress and masculinity
  1. Low Testosterone and Sexual Health

Symptoms such as decreased libido, fatigue, loss of muscle mass, and erectile dysfunction (ED) often emerge in the 40s. While age-related testosterone decline is common, hypogonadism should be ruled out.

Evaluation:

  • Morning total testosterone (x2 if low)
  • LH, FSH, and prolactin if testosterone is low
  • Assessment for diabetes, sleep apnea, and cardiovascular disease

Management:

  • Lifestyle modification
  • Treat underlying causes (e.g., obesity, OSA)
  • Testosterone replacement therapy (TRT) only in symptomatic, confirmed low testosterone after shared decision-making
  1. Prostate Health

While prostate cancer screening typically begins at 50 (or earlier with risk factors), lower urinary tract symptoms (LUTS) such as urgency, nocturia, and weak stream may start in the 40s.

Evaluation:

  • International Prostate Symptom Score (IPSS)
  • Digital rectal exam (DRE) if indicated
  • PSA testing if high-risk (African American men, family history)

Management:

  • Watchful waiting for mild symptoms
  • α-blockers or 5α-reductase inhibitors for moderate to severe LUTS
  • Urology referral as needed

Preventive Screenings and Age-Appropriate Testing

Screening/Test

Recommendation

Blood pressure

Every year; more if ≥130/80 mmHg

Lipid panel

Every 5 years, or more frequently if ASCVD risk is elevated

Diabetes (A1c or fasting)

Every 3 years, starting at age 40, or sooner with risk factors

Colon cancer

Begin at 45 (USPSTF); options include FIT, Cologuard, colonoscopy

Hepatitis C

One-time screening if born 1945–1965 or with risk factors

HIV/STIs

At least once; more often with risk

Mental health (depression)

Annually using PHQ-9 or similar screening tool

Testosterone (if symptomatic)

Two separate morning total testosterone levels

Skin cancer

Visual skin exam; encourage patient self-exams

Vision/hearing

Baseline assessment if symptomatic

Cancer Awareness and Risk Reduction

Though prostate cancer screening is often deferred until the 50s, certain cancers warrant attention starting in the 40s.

Colorectal Cancer:

  • New USPSTF guidelines recommend beginning CRC screening at age 45
  • Options include fecal immunochemical test (FIT), multitarget stool DNA (Cologuard), and colonoscopy

Skin Cancer:

  • Men in their 40s may not use sunscreen regularly and have increased cumulative UV exposure
  • Counsel on monthly skin self-exams and sun protection

Lung Cancer:

  • For patients 50–80 with a 20 pack-year smoking history who currently smoke or quit within the last 15 years, recommend annual low-dose CT

Musculoskeletal and Bone Health

Men in their 40s often experience the early signs of joint degeneration and back pain. While osteoporosis is less common in men than women, it's not rare — particularly in those with risk factors.

Key Considerations:

  • Vitamin D and calcium intake
  • Resistance training to maintain muscle mass and bone density
  • Assess for secondary osteoporosis in men with fragility fractures

Bone Density Testing:

  • Not routine in the 40s, unless risk factors (e.g., long-term steroid use, hypogonadism, alcohol abuse, family history of osteoporosis)

Sleep Disorders and Fatigue

Men in their 40s are at increasing risk for obstructive sleep apnea (OSA) due to weight gain, enlarged neck circumference, and changes in airway tone.

Common Symptoms:

  • Snoring
  • Daytime sleepiness
  • Morning headaches
  • Difficulty concentrating

Diagnosis:

  • STOP-BANG questionnaire
  • Home sleep apnea testing or in-lab polysomnography

Treatment:

  • CPAP therapy
  • Weight loss
  • Avoidance of alcohol and sedatives

Lifestyle Interventions: The Foundation of Health

Family physicians play a central role in motivating behavior change. Conversations around the “40s checkup” should emphasize the opportunity to prevent long-term disease with small, sustainable steps.

Exercise:

  • Encourage 150–300 minutes/week of moderate-intensity aerobic activity
  • Include resistance training ≥2 days/week

Nutrition:

  • Mediterranean diet shown to reduce CVD risk
  • Limit processed foods, excess sodium, and sugar-sweetened beverages

Alcohol and Tobacco:

  • Limit alcohol to ≤2 drinks/day
  • Offer smoking cessation counseling and pharmacotherapy

Stress Management:

  • Encourage mindfulness, therapy, and social support
  • Screen for work-related burnout or midlife crisis symptoms

Engaging the Male Patient

One of the challenges in managing health in men in their 40s is getting them to come in at all. Studies show men are less likely to seek preventive care than women. Strategies to overcome this include:

  • Framing the visit as a “performance tune-up” rather than a “check-up”
  • Highlighting long-term goals (e.g., staying active for kids, sports)
  • Using clear, direct language and providing data when possible
  • Addressing concerns about sexual health early in the visit

Conclusion

The 40s offer a golden window for preventive care. As chronic diseases start to emerge silently, this decade is an ideal time for primary prevention, risk reduction, and health optimization. Family medicine physicians, who serve as both gatekeepers and advocates, are uniquely positioned to influence this trajectory.

Through thoughtful screening, shared decision-making, and motivational counseling, we can help our male patients navigate this critical decade with resilience, vitality, and longevity.

References

  1. U.S. Preventive Services Task Force. www.uspreventiveservicestaskforce.org
  2. American College of Cardiology. ASCVD Risk Estimator.
  3. American Diabetes Association. Standards of Medical Care in Diabetes—2024.
  4. American Urological Association. Guidelines on LUTS/BPH.
  5. CDC National Health Statistics Reports, 2023.
  6. Harvard Men's Health Watch. Health threats for men in their 40s.



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