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Material References

References for Hormone Effects on Neurotransmitters 

Estrogen

Increases Serotonin

Modulates Dopamine

Progesterone

Increases GABA

Testosterone

Increases Serotonin

Increases Dopamine

DHEA

Increases Dopamine

Increases Norepinephrine

Neuroprotective vs. Glutamate Excitotoxicity

Modulates Serotonin

Inhibits GABA

Increases Neuronal Plasticity

Thyroid

Enhances Serotonin

Cortisol Excess

Modulates Serotonin

Blocks Tryptophan Metabolism into Serotonin

Acute Stress Increases Glutamate

Cortisol Deficiency

Decreases Epinephrine

Decreases Serotonin

Increases Norepinephrine when Stressed

Insulin Excess

Decreases Serotonin

Increases Norepinephrine

Decreases Dopamine

References for Neurotransmitter Effects on Hormones

Serotonin

Modulates Thyroid Function

Melatonin Precursor

Modulates Hypothalamic Activity

GABA

Excess Impedes thyroid function

Dopamine

Deficiency Increases Prolactin

Dopamine Increases Growth Hormone

Dopamine Suppresses TSH

Norepinephrine

Excess: Acute Raises Cortisol

Modulates Hypothalamic Activity

Epinephrine Excess

Decreases Insulin Secretion

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Serotonin

Serotonin

Inhibitory Neurotransmitter

Overview

One of our feel-good neurotransmitters; Low levels of serotonin may relate to occasional symptoms like moodiness, sleep issues, and carb cravings.