The Road to Longevity
Donald McLeod M.D., Philip White M.D., and W.M. Heatherington
The Truth About Hormone Replacement, Antioxidants, Exercise, Stress, and Diet.

Section III
The Secretogogue Agents

Factors Affecting Human Growth Hormone Secretion
INCREASE HGH DECREASE HGH
Physiological
Deep Sleep
Strenuous Exercise
Stress Conditions
Protein Ingestion
Fasting
 HyperGlycemia
Free Fatty Acids
Pharmacological
Insulin with Hypoglycemia

Post Glucagon

Hormones:
HGH Releasing Hormone
Vasopressin, ACTH
Estrogens
Peptides (hexarelin)

Neurotransmitters:
Alpha Adrenergic Agonists
(clonidine)

Beta Adrenergic Antagonists
(inderal and other beta blockers)

Serotonin Precursors
(also SSRI's like Prozac)

Dopamine Agonists
(levodopa, apomorphine, bromocriptine)

GABA Agonists

Melatonin

Potassium I.V.

Pyrogens (Bacterial Toxins)

Amino Acids
(arginine, lysine, ornithine)
 Hormones:
Somatostatin
HGH
Cortisol etc.

Neurotranmitters:
Alpha A. Antagonists
(phentolomine)

Beta A. Agonists
(isoproteronol)

Serotonin Blockers
(methysergide)

Dopa Antagonists
(phenothiazines)
Diseases
Starvation and Anorexia Nervosa
Chronic Renal Failure
Acromegaly
 Obesity
Dwarfism
Thyroid Disease
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