Unlike the abrupt hormone shift seen in menopause, male hormone decline (sometimes called “andropause”) is more variable. A man in his 40s or 50s might report fatigue, low libido, irritability, or depression—all of which may be linked to suboptimal testosterone. But the solution isn’t always supplementation. Understanding the root cause, measuring levels accurately, and supporting the body’s own hormone production can offer lasting results.

Meridian Valley Lab’s 24-Hour Urine Hormone Profile provides a comprehensive look at hormone production throughout the day. This can be especially useful for detecting cases where morning testosterone is low, but afternoon levels are adequate, a pattern common in older men.

Key markers to consider:

• Total and free testosterone
• Estradiol and estrone (to assess estrogen load)
• 2/16 ratio for estrogen metabolites (linked to prostate health)
• Androgen metabolites and 5-alpha reductase activity
• Total urinary nitrates (related to nitric oxide and erectile function)

Dr. Kaplan emphasized that optimizing testosterone begins with foundational lifestyle habits:

• Sleep: Just five hours of sleep a night can reduce testosterone by up to 15%.
• Exercise: Resistance training, especially with large muscle groups and short rest intervals, can acutely boost testosterone and improve receptor sensitivity.
• Diet: A focus on insulin sensitivity is crucial, as metabolic dysfunction (including elevated visceral fat and leptin) increases aromatase activity—converting testosterone to estrogen.

Some well-researched nutrients and herbal supplements may support endogenous testosterone production:

• Vitamin D (especially in overweight individuals)
• Zinc (important for LH receptor sensitivity)
• Vitamin A & K2 (support steroid hormone pathways)
• D-Aspartic Acid (shown to increase LH and testosterone in some studies)
• Ashwagandha (an adaptogen shown to reduce cortisol and boost testosterone)
• Tribulus terrestris, Tongkat Ali, and Horny Goat Weed (used traditionally for libido and testosterone support)

Younger men with low testosterone should be evaluated for:

• Thyroid dysfunction (especially hypothyroidism or high reverse T3)
• Environmental exposure to endocrine disruptors (e.g., BPA, persistent organic pollutants)
• Malabsorption, low cholesterol, or elevated prolactin

One-third of men with low testosterone may also have insulin resistance—even if their fasting glucose and A1C appear normal. Measuring testosterone-to-estrogen ratios or conducting a 4-hour glucose tolerance test with insulin levels may uncover hidden metabolic dysfunction that contributes to hormone imbalance.

Androgen health isn’t just about boosting testosterone. It’s about assessing the why, addressing root causes, and supporting the body holistically. Meridian Valley Lab offers comprehensive hormone testing and free clinical consultations to help practitioners build the most effective plans for their patients.

✅ 24-hour testing for deeper context: Explore the 24-Hour Urine Hormone Profile.

🧪 Interested in nitric oxide pathways? Pair androgen evaluation with urinary nitrates when ED and vascular factors are part of the clinical picture.

Practitioners: Explore our 24-Hour Urine Hormone Profile and request a free clinical consult with our team to build a testing and monitoring plan tailored to your patient’s goals.

Patients: Ask your licensed provider whether comprehensive androgen and metabolite testing is appropriate for your symptoms and prevention goals. Meridian Valley Lab provides laboratory services only and cannot advise patients directly.

Call: 855.405.8378 | 206.209.4200

If you’d like a supporting citation list for sleep-androgen relationships, aromatase/metabolic links, and 24-hour androgen metabolite assessment strategies, please contact our team.