Dr. William Clearfield

The Steroidogenic Pathways – The Hormone Highway Begins Here

The-Steroidogenic-Pathways

Hormones do not work alone. Every estrogen surge, testosterone boost, or cortisol spike starts with a single master molecule: cholesterol. (1)

That’s right—the much-maligned fat molecule is actually the raw material for all sex hormones.

When cholesterol levels drop below 140 mg/dL, the body simply can’t make enough of its key hormones. This includes estrogen, progesterone, testosterone, DHEA, and cortisol—all of which rely on one critical intermediate: pregnenolone

🔄 From Cholesterol to Hormonal Harmony

  • Cholesterol → Pregnenolone
  • Pregnenolone branches into:
    • DHEA
    • Progesterone
    • Testosterone
    • Estrogen
    • Cortisol

🧠 Why Pregnenolone Matters

Pregnenolone isn’t just a hormone precursor—it’s a hormone powerhouse on its own. It:

  • Buffers cortisol, enhancing your stress resilience
  • Reduces inflammation and pain
  • Boosts memory, focus, and nerve transmission
  • Improves mood, learning, and sleep
  • Supports nerve repair

⏳ The Aging Effect

As we age, pregnenolone levels naturally decline—by as much as 65% by age 75 compared to age 35. Low levels are linked to:

  • Arthritis
  • Insomnia
  • Brain fog and poor memory
  • Fatigue and depression
  • Reduced ability to handle stress

Common causes of low pregnenolone include:

  • Low cholesterol (<140 mg/dL)
  • Hypothyroidism
  • High intake of trans or saturated fats
  • Certain tumors

⚠️ Too Much of a Good Thing?

While deficiency is more common, excessive pregnenolone can cause:

  • Fluid retention
  • Drowsiness
  • Irritability
  • Headaches
  • Palpitations
  • Insomnia

🎯 Optimal Levels

The ideal blood level of pregnenolone:

  • 90-110 ng/dL (2)

DHEA-The Master Hormone Precursor:

Dehydroepiandrosterone (DHEA) is produced in the adrenal glands, brain, and skin, where it serves as a vital precursor to estrogen and testosterone in both men and women. Often called the “mother of all steroid hormones,” DHEA influences dozens of biological systems.

🔻 Natural Decline with Age

Like other hormones, DHEA production declines over time. By age 70, most people produce only 10–20% of the amount present at age 20.

🧬 What DHEA Does

DHEA plays a wide-ranging role in restoring and protecting health:

  • Improves mood and well-being
  • Supports immune function and tissue repair
  • Reduces allergic response and systemic inflammation
  • Enhances brain function and memory
  • Increases lean body mass and reduces body fat
  • Lowers triglycerides and cardiovascular risk
  • Improves insulin sensitivity and helps prevent type 2 diabetes
  • Acts as a natural antioxidant
  • May slow biological aging (shown in animal models)
  • Supports bone health, reduces osteoporosis and atherosclerosis risk
  • Improves sleep and reduces depressive symptoms

⚖️ What Causes DHEA Deficiency?

  • Aging
  • Menopause
  • Chronic stress
  • Tobacco use

⚠️ Signs of Excess DHEA

While deficiency is common, excessive DHEA supplementation may lead to:

  • Fatigue
  • Irritability
  • Insomnia
  • Mood swings
  • Weight gain
  • Sugar cravings
  • Acne and hirsutism (excess facial or body hair growth)

🎯 Optimal Blood Levels (3)

  • Men: 500–600 ng/dL
  • Women: 200–250 ng/dL

Side effects associated with excess DHEA include acne and hirsutism.

other-hormones

Hormonal Regulators — DHT, Cortisol, and Insulin

🔹 Dihydrotestosterone (DHT): The Powerful Derivative of Testosterone

DHT (Dihydrotestosterone) typically accounts for 10–15% of total testosterone and is a potent androgen that significantly influences hair, skin, sexual function, and prostate health.

✅ Benefits of DHT

  • Enhances libido
  • Increases energy and motivation

⚠️ Risks of Excess DHT

  • Accelerated hair loss (especially male-pattern baldness)
  • Prostate enlargement (BPH)
  • Acne
  • Reduced sperm production
  • Erythrocytosis (elevated red blood cells)
  • Gynecomastia
  • Sleep apnea
  • Fetal virilization (in utero exposure)

🎯 Optimal DHT Levels

  • 100–500 ng/dL

🩺 DHT Management Options

  1. Scutellaria baicalensis “Chinese Skullcap”-Dose 1-2 gm/d
  2. DIM 3-Dose 1-3 gm/d (with Bioperine 2.5 mg)
  3. Vitamin D3-Tirate to serum level 50-80 ng/dL
  4. Probiotic + Colostrum
  5. Megaspore 1/d
  6. Colostrum 10-30 gm/d
  7. Iodine-150-225 mcg/d
  8. Pregnenolone-25-30 mg 2x/d
  9. Zinc-30 mg 2x/d
  10. Mucuna pruriens-250-1000 mg/d
  11. UltraClear Sustain (BCAA’s)-1 scoop in 8 oz liquid daily

Note: We do not recommend 5 alpha reductase inhibitors, finasterinde or dutasteride due to post finasteride syndrome. (Can we hyperlink this to the article on website?)

🔸 Cortisol: The Stress Hormone with Dual Roles

Cortisol, produced by the adrenal glands, is one of the few hormones that increases with age (the other is insulin). It plays a crucial role in energy balance, stress response, immune modulation, and metabolic control.

🧠 Normal Stress Response

  • Cortisol rises during stress and should return to baseline when stress is resolved.

⚠️ Chronic Elevation (Adrenal Dysregulation)

When stress becomes chronic or unmanaged, cortisol remains elevated, contributing to:

  • Irritability and mood swings
  • Sugar cravings
  • Chronic fatigue and muscle weakness
  • Night sweats and insomnia
  • Abdominal fat accumulation
  • High blood pressure, lipids, and blood sugar
  • Immune suppression and frequent infections
  • Impaired thyroid function and thin skin.

🔁 Hormonal Imbalance Triggered by Cortisol

  • Decreases progesterone production
  • Increases thyroid hormone binding, reducing its activity

🎯 Key Functions of Cortisol

  • Regulates blood sugar and energy
  • Supports immune modulation and protein synthesis
  • Influences mood, sleep, and bone turnover

🧪 Preferred Testing

  • 4-point salivary cortisol panel (morning, noon, afternoon, night)
  • Also test salivary DHEA-S, progesterone, estrogen, testosterone
  • Pair with capillary blood glucose readings for adrenal/metabolic mapping

✅ Strategies to Normalize Cortisol

  • DHEA replacement (if low)
  • Adaptogenic herbs (e.g., Rhodiola, Ashwagandha, Licorice root extract)
  • Anti-inflammatory diet
  • Key nutrients:
    • B-complex, vitamin C
    • Magnesium, calcium, zinc, selenium, copper, manganese
    • Omega-3 fatty acids, phosphatidylserine
    • Multi-glandular adrenal formulas
  • Lifestyle: Stress reduction techniques (mindfulness, breathwork, restorative sleep).

🔻 Insulin: The Blood Sugar Regulator & Inflammatory Trigger

Insulin is secreted by the pancreas and plays a vital role in:

  • Converting glucose into energy (or fat if unused)
  • Promoting muscle development
  • Preventing blood sugar spikes
  • Counterbalancing cortisol and adrenaline

✅ Benefits

  • Supports glucose uptake
  • Lowers blood sugar
  • In men: Testosterone enhances insulin function
  • In women: Estrogen promotes similar metabolic effects

⚠️ Signs of Insulin Deficiency

  • Bone loss
  • Depression
  • Fatigue
  • Insomnia

Caused by:

  • Low-carb diets
  • Over-exercising
  • Caloric malnutrition

⚠️ Risks of Excess Insulin

  • Acne, asthma
  • Mood swings, sugar cravings
  • Hypertension, high cholesterol
  • GERD and cardiovascular disease
  • Breast and colon cancer
  • Decreased testosterone in men
  • Estrogen/testosterone imbalance in women
  • Insomnia and fluid retention

Insulin levels often rise for years before glucose becomes abnormal, making insulin a critical early biomarker for metabolic dysfunction.

🧪 Root Causes of Insulin Resistance or Hyperinsulinemia

  • High-carbohydrate diets
  • Sugared beverages and snacks
  • Low-fat/high-sugar diets
  • Caffeine or alcohol overuse
  • Hyperthyroidism
  • Estrogen or testosterone imbalances
  • Sedentary lifestyle
  • Smoking
  • Medications (e.g., beta-blockers, steroids, antidepressants, diuretics)

✅ Nutritional & Supplement Strategies for Improving Insulin Sensitivity

  • Anti-inflammatory diet
  • Soluble fiber (e.g., oat bran, psyllium)
  • Omega-3s (EPA/DHA)
  • Chromium
  • Alpha-lipoic acid
  • Vanadium
  • Antioxidants: Vitamins A, C, E + Selenium
  • CoQ10
  • Cinnamon
  • Green tea & green coffee extract
  • Maitake mushroom extract

🎯 Optimal Ranges

  • Serum insulin: 5–10 μU/mL
  • Glucose-to-insulin ratio: ~10:1

Melatonin & Growth Hormone – The Sleep and Vitality Regulators

🌙 Melatonin: The Body’s Circadian Timekeeper and Cellular Protector

Melatonin is primarily produced by the pineal gland and secondarily by the retina, gastrointestinal (GI) tract, and white blood cells. It plays a key role in regulating the circadian rhythm, helping the body fall asleep, stay asleep, and synchronize biological functions with light-dark cycles.

✅ Melatonin’s Functions and Benefits

  • Promotes restful sleep and resets circadian rhythm
  • Helpful for insomnia and jet lag
  • Synthesized from tryptophan (requires B vitamins)
  • Potent antioxidant that scavenges free radicals
  • Lowers cortisol, supporting adrenal recovery
  • Enhances immune function
  • Blocks estrogen receptor binding (may reduce estrogen dominance)
  • May have anti-cancer and anti-aging properties
  • Improves mood, sleep quality, and stress response
  • Stimulates growth hormone and parathyroid hormone production
  • Reduces:
    • Blood pressure
    • Migraine and cluster headache frequency
    • Nocturia (nighttime urination)
    • Inflammatory burden

⚠️ Factors That Deplete Melatonin

  • Alcohol, caffeine, and tobacco use
  • Certain medications (e.g., beta blockers, NSAIDs)
  • EMF (electromagnetic field) exposure
  • Shift work and artificial light at night

⚠️ Sources of Excess or Sensitivity

Some foods and herbs naturally boost melatonin:

  • Bananas, cherries, oats, rice, corn, tomatoes, ginger, walnuts
  • St. John’s Wort
  • Over-exercising or over-supplementing

🎯 Melatonin Supplementation

  • Most effective form: Compounded micronized melatonin
  • Dose range: 3 to 30 mg, titrated to response
  • Best taken ~1 hour before bedtime

🔍 Response Variability

  • ~10% of patients may not respond
  • ~1% may experience paradoxical stimulation
  • Minimal effect in chronic sleeping pill users
  • Rare side effects: Grogginess, and hair repigmentation (darkening)

💪 Growth Hormone (GH): The Regenerator of Youthful Physiology

Growth hormone declines by up to 75% from early adulthood to midlife, triggering a cascade of aging-related effects:

  • Loss of lean muscle mass
  • Accumulation of body fat
  • Thinning skin
  • Decreased vitality and mobility

✅ Benefits of GH Replacement Therapy

  • Increases basal metabolic rate by 6–11% within 6 months
  • Enhances lean body mass and reduces fat
  • Improves sexual function and performance
  • Promotes hair regrowth and skin thickness
  • Supports cardiovascular health by:
    • Reducing triglycerides, total cholesterol, and LDL
    • Preventing carotid artery thickening
    • Improving cerebral blood flow and cardiac output
  • Improves lung function and exercise tolerance
  • Enhances sleep quality—including REM and slow-wave sleep
  • Boosts energy, mood, emotional resilience, and pain tolerance

⚠️ GH Deficiency Is Linked To

  • Increased risk of cardiovascular disease and atherosclerosis
  • Decreased bone mineral density and osteoporosis
  • Declines in physical, emotional, and sexual well-being
  • Doubled risk of certain cancers when GH levels are abnormally low

🦴 Bone Density Improvements with GH Therapy

  • GH increases bone mineral density (BMD) by 6–15%
  • Best results occur in women receiving estrogen plus bisphosphonate therapy (e.g., Fosamax, Actonel)

Positive Effects and Considerations of Growth Hormone Replacement

– Positive effects of growth hormone replacement is not typically evident for at least 6 months.
– Side effects of growth hormone (dose-dependent) may include edema, arthralgias, myalgias (notably carpal tunnel syndrome), and short-term glucose intolerance.
– No long-term changes in fasting blood sugar or insulin levels have been observed in studies spanning 7 and 10 years. A transient increase in insulin resistance may occur within 1-6 weeks, which can persist for up to 18 months. However, there is no evidence of an increased incidence of diabetes compared to the general population (12).
– There is no evidence that growth hormone replacement increases cancer risk.

Growth hormone levels are monitored via IGF-1 levels. Optimal IGF-1 levels for adults are typically between 300 and 350 ng/mL. Side effects are more likely when levels exceed 380 ng/mL.

– The standard dose of growth hormone is 0.1 mg/day administered subcutaneously. The dose may be titrated upward to 0.2, 0.4, or 0.8 mg/day, with a maximum of 1.2 mg/day.

References

– Tsujimura, A., et al. “Treatment with human chorionic gonadotropin for PADAM.” *Aging Male*, 2005 Sept-Dec; 8(3-4):175-179.
– Hanaway, Patrick. *Estrogen Metabolism Hormone Essentials: Presentation* at A4M Lecture Series, Las Vegas, NV, December 10, 2010.
– Hertoghe, The Hormone Handbook, 2006, International Medical Publications, UK, p. 221.
– Bassil et al. “The benefits of testosterone replacement therapy: A review.” *Therapeutics and Clinical Risk Management*, 2009; 5:427-448.
– [Wellness Hormone Balance](http://www.wellnesshormonebalance.org/files/)
– [BodyLogicMD Testosterone Levels](http://www.bodylogicmd.com/for-men/testosterone-levels)

Other Hormones Symptoms

Growth HormoneDHEA
Thinning HairDry Hair
Sagging CheeksDry Skin and Eyes
Receding GumsFlabby Muscles
Flabby AbdomenFlabby Abdomen
Slack MusclesLittle Hair Under Arms
Skin Thin and DryScant Pubic Hair
Poor Recovery from Physical ActivityScant Fatty Tissue in Pubic Area
Profound FatigueNoise Intolerance
Isolates Self (“I hate everyone”)Poor Libido
Overwhelming Anxiety and WorryPoor Sexual Scent

Melatonin & Insulin

MelatoninInsulin
Aging Faster Than PeersCraves Sweets
Difficulty Falling AsleepAlways Thirsty
Difficulty Staying AsleepUrinates Frequently
Mind Races at NightSlow Healer
Difficulty Recovering From Long TripsSkinny Stomach and Buttocks
Night Shift or Swing Shift Worker 
Lives Out of “Sync” with World 
Often Jet Lagged 
Often Takes Sleeping Pills 
Tired Upon Rising 
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