MAAFIM 6th International Conference 2026

Background & Clinical Gap

Hormones regulate every aspect of brain function — synaptic pruning in childhood, mood stability in adulthood, and neuroprotection in aging. Yet conventional “normal range” testing misses the clinically relevant question: What level optimizes brain function for this individual?

What This Session Delivers

A practical framework for assessing and optimizing four hormonal axes with direct brain impact, using circadian-sensitive testing and function-guided targets.

Key Clinical Insights

1. Thyroid: T3 is the brain’s hormone. Low T3 with normal TSH (euthyroid sick syndrome / low T3 syndrome) is a signature of inflammatory-metabolic stress — not central hypothyroidism. Selenium, zinc, and adequate carbohydrates (for T4→T3 conversion) matter more than levothyroxine in these cases.
2. Cortisol: The circadian slope matters more than the number. A flattened diurnal curve (high midnight cortisol, blunted morning peak) predicts hippocampal atrophy. A globally low curve (low all day) suggests HPA exhaustion. Treatment differs completely.
3. Insulin: Central resistance drives anhedonia and brain fog. Peripheral insulin resistance correlates with but does not equal brain insulin resistance. Intranasal insulin (investigational) and time-restricted eating directly target CNS insulin signaling.
4. Neurosteroids: The missing piece in “hormone replacement.” Allopregnanolone (GABA-A PAM), pregnenolone, and DHEA decline with age and chronic stress — often independent of circulating estradiol or testosterone. Low allopregnanolone is linked to PMS, perimenopausal depression, and postpartum mood disorders.

Practical Assessment Protocol (What You Can Do)

1. TSH, free T3, free T4, reverse T3. Optimal (brain) vs. Normal: fT3 in upper half of range; rT3 <12 ng/dL.
2. Salivary x4 (waking, noon, sunset, bedtime). Optimal (brain) vs. Normal: Slope >40% drop by noon; midnight <50% of morning.
3. Fasting insulin + HOMA-IR. Optimal (brain) vs. Normal: Insulin <8 μIU/mL; HOMA-IR <1.5.
4. Pregnenolone, DHEA-S, allopregnanolone (specialty lab). Optimal (brain) vs. Normal: Pregnenolone 50–100 ng/dL (age-dependent).

Intervention Ladder (Least to Most Intensive)

1. Lifestyle: Circadian light exposure, sleep timing, meal timing
2. Nutraceutical: Magnesium glycinate, zinc, selenium, vitamin D, phosphatidylserine (for cortisol modulation)
3. Botanical: Ashwagandha (low cortisol), Rhodiola (fatigue), Bacopa (cognition)
4. Hormonal (when indicated): Pregnenolone (microdose 5–10 mg sublingual), DHEA (5–15 mg, monitor DHEA-S), bioidentical T3 (rare, case-specific)

Learning Objectives

1. Implement circadian-sensitive hormonal testing (cortisol x4, fasting morning T3/rT3, insulin).
2. Distinguish low T3 syndrome from central hypothyroidism — treat differently.
3. Recognize neurosteroid deficiency (allopregnanolone, pregnenolone) in mood disorders across female reproductive stages.
4. Build a stepped care algorithm from lifestyle → nutraceutical → hormonal interventions.