What can cause fatigue?

Fatigue: The causes of fatigue are multi-factorial. Often times fatigue is caused by problems with: sleep, hormones, heavy metals, infections, nutrient deficiencies, from lack of exercise, poor oxygenation and food allergies.

Multifactorial: Chronic fatigue syndrome is a multifactorial consequence of hormonal, immune system and nervous system dysfunction resulting from genetic predispositions and dietary and environmental insults. These factors impair the patient's ability to produce energy and they end up chronically fatigued. Poor diet, suboptimal sleep, food and other allergies contribute.