Hyperthyroidism: causes, symptoms, and complications

It is located the thyroid gland The thyroid gland is at the front of the neck, shaped like a butterfly. It has two connected lobes and releases hormones called thyroxine (T4) and triiodothyronine (T3).

Thyroid hormones regulate metabolic processesand control how the body's cells use energy. So, when the thyroid releases too much T4 and T3, it speeds up body systems, which is called hyperthyroidism.

In this article, we’ll look closely at what hyperthyroidism is, its causes, and symptoms.

Overactive thyroid or Hyperthyroidism

The thyroid is controlled by the pituitary gland in the brain. The pituitary releases a hormone called TSH, which stimulates the thyroid. When thyroid activity or hormone release drops, TSH in the blood rises to boost thyroid activity.

The opposite is true too. If thyroid activity or hormone release rises, TSH in the blood drops to reduce thyroid activity.

Still, hyperthyroidism can happen when the thyroid releases too much of its hormones (T4 and T3) into the blood. This speeds up body systems, causing distress, higher metabolism, and other symptoms.

So, hyperthyroidism is a serious health issue that needs early checkup and treatment.

Causes of hyperthyroidism

Many health conditions can cause hyperthyroidism. Graves’ disease is one of the most common causes. It’s an autoimmune disorder where the immune system attacks the thyroid with antibodies, causing it to release too many hormones.

Graves’ disease (and autoimmune diseases in general) often affects women more than men, caused by changes in several genes.

Also, there are some other causes for hyperthyroidism, which can include:-

• Excess iodine:- Iodine is a key mineral in thyroid hormones T4 and T3, and too much iodine can cause hyperthyroidism even if just temporary. You can get iodine from foods like fish dairy products, and some medicines.

• ThyroiditisThyroiditis means conditions that cause the thyroid gland to swell, leading to the production of too much or too little hormones.

• Benign Thyroid NodulesNodules are lumps that form in the thyroid, often for unknown reasons. They can cause the thyroid to make a lot of hormones, but usually these nodules are benign, also called benign tumors.

• Malignant Thyroid NodulesThyroid nodules can be malignant or cancerous. Whether they are benign or malignant is determined by ultrasound or a biopsy of thyroid tissue.

• Ovarian or testicular tumors.

• Having high levels of T4 hormone in the bloodThis can happen from taking too many supplements or too much thyroid hormone medicine called Levothyroxine.

Symptoms of hyperthyroidism

Some symptoms of hyperthyroidism can be clearly physical, while others might not be obvious and can be hard to notice at first. Sometimes they get mixed up with symptoms of other conditions like anxiety.

According to the US National Institutes of Health, symptoms of hyperthyroidism can include:

• Weight loss, but with increased appetite.

• Rapid or irregular heartbeat.

• Feeling nervous and irritable.

• Feeling tired, with trouble sleeping.

• Hand tremors and muscle weakness.

• Easily getting overheated.

• Frequent bowel movements.

• Long-term untreated thyroid disease can cause hair breakage and hair loss.

• The thyroid gland itself can swell and enlarge, which can happen in both halves or just one half of the thyroid.

• Protruding eyes might also appear, known as exophthalmos, linked to Graves’ disease.

Complications of Hyperthyroidism

Untreated hyperthyroidism can increase the risk of many other serious complications, which may include:-

1. Thyroid stormIt's a rare health condition caused by untreated hyperthyroidism. The body goes into overdrive due to too much thyroid hormone. It can cause life-threatening symptoms like fast heartbeat, high blood pressure, and fever.

2. Pregnancy complications:- This includes people who already have thyroid disorders or get hyperthyroidism during pregnancy. Thyroid hormone levels in pregnancy can cause problems for both moms and babies, like miscarriage and preterm birth. So it's important to test regularly during pregnancy to check for any issues, then the doctor decides on treatment.

3. Osteoporosis- Hyperthyroidism makes bones weak and fragile, leading to osteoporosis     , eating can help Vitamin D supplements andcalcium During and after treatment to improve bone health. Also, doing daily exercise or physical activity can help prevent osteoporosis.

4. CancerSome people with overactive thyroid can get a type of cancer called thyroid cancer. Some reviews say thyroid cancer in these patients tends to be more aggressive than in people with a normal thyroid.

5. Strokes:Overactive thyroid can cause atrial fibrillation, irregular heartbeats, which can lead to strokes and congestive heart failure.

Untreated thyroid problems can cause serious issues in the body and might turn into medical emergencies if not treated. So, you should see an endocrinologist as soon as possible if you think you have symptoms of hyperthyroidism.

Article source:- 1.