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The word Endocrinology is derived from the Greek word endon, meaning “within” and krino, meaning "to separate". In 1855, by the term "internal secretions," Claude Bernard separated the products of these ductless glands from other glandular products, the first explanation of what would become the modern concept of hormones. However, modern endocrinology largely originated in the 20th century. Charles Brown-Sequard, who used extracts from animal tests to treat male ageing, attempted the first endocrine therapy in 1889; this sparked a vogue of "Organic Therapies," which soon vanished but led to adrenal and thyroid extracts which were the predecessor of modern cortisone and thyroid hormones. In the early 1900s, Ernest Starling coined the term Endocrinology. He is well-known for his eponymous law of the cardiovascular system and regarded as the founder of Endocrinology. Thomas Addison who showed the relationship between adrenal gland and Addison disease in 1855. is considered as the 'Father of Endocrinology' for his achievements in the field of Endocrinology. In 1921, with the discovery of insulin(by Banting & Best) , the endocrinology field became popular.


Endocrinology is a branch of medicine that focuses on hormone-related diseases and conditions. The endocrine system is a network of glands that are accountable for producing hormones directly into the bloodstream to different tissues in the body. Hormones are chemical messengers formed in our body.

An endocrinologist is a doctor who specializes in the diagnosis and treatment of the diseases that affect the glands and hormones.

General signs and symptoms:

There is no specific type of symptoms of endocrine disorders as symptoms will vary based on the particular type of endocrine disease as well as the severity of condition one has. However, weight loss or gain, fatigue, stomach upset, dehydration, and skin & hair changes are commonly reported symptoms and it is better to seek medical help if you notice any of the significant changes in the routine functioning of your body. Endocrine disorders arise when hormone levels are too high or too low, or when the body does not respond to hormones as it should. If you experience any of the above symptoms, then book an appointment with best diabetes doctors in Bangalore at Aster CMI hospital.


An endocrinologist will conduct a thorough investigation to determine your endocrine condition.

They are as follows:

Specific hormones in blood and urine, Electrolytes, blood glucose tests, Calcium, Phosphorus etc, Fine needle aspiration (FNA), Sestamibi scan, Blood test, Urine test, Ultrasound, CT scan, MRI scan, PET (Positron emission test), RAI (Radioactive iodine scan) scan, Tc99m Thyroid scan, Sestamibi Parathyroid scan, Bone Scan, DXA scan-BMD, MIBG (Meta iodo benzo guanidine) scan and Venous sampling.

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Which is the most common endocrine disease?

Diabetes and Thyroid related disorders are the most common endocrine diseases seen in people. Food with higher amounts of sugar has to be avoided, including fruit juice, soda, sports drinks and other liquid calories etc. to control diabetes.

What is diabetes?

Diabetes is a group of diseases that result in an increase of sugar in the blood (high blood sugar level). Over time, high blood glucose level leads to serious health problems such as heart disease, stroke, kidney disease, eye problems, dental disease, nerve damage and foot Problems.

What are some of the endocrine disorders?

They are Diabetes,Hyperthyroidism, Hypothyroidism, Adrenal insufficiency (Addison disease), Hypopituitarism, Diabetes insipidus, Cushing's disease, Osteoporosis, Calcium and sodium disorders, Secondary hypertension, Acromegaly-Gigantism, Polycystic ovary syndrome(PCOD), Multiple endocrine neoplasia I and II, and Short Stature, Precocious and delayed puberty.

When should I see an endocrinologist?

If you experience symptoms of hormone-related diseases like sudden weight loss or gain, acne, facial hair in women, infertility, feeling too cold or too hot, change in voice, feeling too tired and severe hair loss.

Are hormone diseases treatable?

Yes, most of the diseases are treatable but first, we need to understand why the hormone level is high or low by various tests, especially blood tests.

Are hormone specialists and endocrinologists the same?

Yes, they are interchangeable terms. A doctor or physician who specializes in the diagnosis and treatment of diseases concerning the hormone is called a hormone specialist or endocrinologist.

What should be the normal blood sugar level for an adult?

The normal blood sugar level for an adult should be between 4.0 to 5.4 mmol/L (72 to 99 mg/dL) when fasting and up to 7.8 mmol/L (140 mg/dL) 2 hours after meals.

What are the common symptoms of high blood sugar and low blood sugar?

For high blood sugar level, the symptoms include extreme thirst, frequent urination, dry skin, hunger, blurred vision, drowsiness and nausea. Whereas for low blood sugar level, the symptoms include shaking, fast heartbeat, sweating, anxiety, fatigue, headache, irritability, dizziness, hunger and impaired vision.

How will diabetes occur?

Diabetes occurs when the pancreas does not secrete an adequate amount of hormone called insulin or the body does not respond properly to insulin. It causes an imbalance between the effects of insulin and glucagon and results in an endocrine condition called diabetes.

What are the different kinds of diabetes?

There are two main types of diabetes:

  • Type-1 diabetes is insulin-dependent diabetes which is caused due to a lack of insulin production.
  • Type-2 diabetes is non-insulin-dependent diabetes which is caused due to the ineffective use of insulin in our body.

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