The middle layer (cortex) is responsible for sex and steroid hormone production. In fact, steroid hormones regulate the sleep cycle and blood pressure and are involved in the metabolism of food into usable energy. The outer part of the adrenals (capsule) is composed of adipose (fat) tissue to protect the adrenal glands.
Adrenal Fatigue
More often than not, we hit the adrenal glands too hard and too often. “First World” lifestyles are, to a large extent, driven by emotional stress (school, work, finances, relationships) and our food, water, and air all contain harmful chemicals that apply physical stress on top of that.

Left unattended, adrenal fatigue can lead to adrenal insufficiency.
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