General Introduction

The endocrine system is a system formed by endocrine glands. Internal secretory glands are organs that synthesize and secrete hormones. Hormones control different activities in our bodies.

Different types of hormones control reproduction, metabolism, growth, and development. Hormones also control our response to our environment and help provide the proper amount of energy and nutrients required for our body’s functions.

The glands that make up the endocrine system are the hypothalamus, pituitary, thyroid, parathyroid, pancreas, ovaries (ovaries in women, testicles in men), adrenal gland (adipose tissue, endothelium (cells lining the inner wall of the vessel).

What is an endocrinologist?

An endocrinologist is a doctor who deals with diseases of the endocrine system. Endocrinologists diagnose diseases that affect the glands. They know how to treat diseases that are often complex and involve many systems in our bodies. Your primary care doctor will refer you to an endocrinologist when you have a problem with the endocrine system.

What do endocrinologists do?

Endocrinologists are trained to diagnose and treat hormone imbalances and problems.


Thyroid diseases

Metabolic disorders

Excess or underproduction of hormones




– Diseases related to fat metabolism

– Infertility (infertility)

Growth retardation (short stature)

Tumors of the glands

– Obesity

Endocrinologists may also order some tests to evaluate how the glands are working.