The thyroid gland is part of the intricate glandular network that coordinates our bodily functions. The thyroid gland is the butterfly-shaped gland in the neck that is responsible for controlling our metabolism. Imbalances in the secretion of thyroid hormone can affect vital functions. T3 (Triiodothyronine) and T4 (Tetraiodothyronine) are thyroid-specific hormones that regulate metabolism.
The pituitary gland maintains the amount of these hormones by secreting Thyroid Stimulating Hormone (TSH). Thyroid homeostasis is maintained by this feedback mechanism between two glands. Thyroid disorders can be broadly categorized based on the amount of secretion.
Excess thyroid hormone causes hyperthyroidism and an abnormal increase in metabolism, increased heart rate, loss of weight, and decreased secretion causing hypothyroidism, which can lead to decreased energy, weight gain, fatigue, and cold intolerance.
Trachea, Larynx
Thyroiditis: Inflammation of the thyroid from infections or autoimmune conditions—it can be asymptomatic or painful.
Grave’s disease: Excessive thyroid hormone production due to an overactive gland.
Hashimoto’s disease: Decreased production of thyroid hormone caused due to damage to the thyroid as a result of autoimmune disease.
Thyroid cancer: Cancerous mass in the gland causing increased hormone secretion. It is a treatable condition with the help of radiation and surgery.
Thyroid nodule: Abnormal nodular mass in the thyroid gland leads to hormone overproduction.
Thyroid storm: Abnormally high levels of thyroid hormone causing severe complications.
Thyroid diseases can be attributed to genetic and environmental factors. They are categorized broadly as hyperthyroidism and hypothyroidism.
Hyperthyroidism: increase in the amount of thyroid hormone due to:
Hypothyroidism: Decrease in the amount of thyroid hormone due to:
Signs and symptoms of hyperthyroidism:
Signs and symptoms of hypothyroidism are:
Thyroid dysfunctions can lead to several complications in the long run.
Accurate diagnoses can be made based on testing and imaging results. T3, T4, and TSH levels are crucial parameters for gauging thyroid dysfunctions. Deviation from the normal levels can be suggestive of underlying disease.
Below are the normal levels of hormones.
T3 (Triiodothyronine) |
100-200 ng/dL |
T4 (Tetraiodothyronine) |
5.0-12.0 μg/dL |
T4 (Tetraiodothyronine) |
0.4-4.0 mIU/L |
Blood tests:
Imaging:
Other:
In individuals with thyroid diseases, lifestyle changes form a major part of thyroid treatment for maintaining normal function. Adapting to an active lifestyle alongside a steady nutritious diet helps in the long run.
Thyroid dysfunction, if unchecked, can lead to a spectrum of problems. In case of genetic predisposition, it is suggested to schedule regular check-ups and testing. While hypothyroidism can be prevented through iodized salt intake, hyperthyroidism is not preventable, and certain lifestyles can set off an autoimmune disease-causing increased thyroid hormone levels. Maintaining a healthy lifestyle and preventing complications with timely diagnosis, identifying symptoms, and medication are effective preventive measures.
Graves’s Disease, Hashimoto’s Thyroiditis, Goiter
The prognosis for thyroid diseases is good. And it can be managed successfully with medications and lifestyle changes. Consult with a medical professional for thyroid treatment options and schedule regular visits to review the symptoms.
If left untreated and no lifestyle modifications are made, the symptoms related to thyroid diseases worsen and lead to obesity, heart attack, infertility, and depression.
Thyroid diseases are caused due to abnormal levels of increase or decrease in hormone secretion. It can also be caused due to increase or decrease in Thyroid Stimulating Hormones secreted by the pituitary gland.
Thyroid dysfunctions can lead to several complications in the long run.
If you are facing any similar signs or symptoms please contact the Nanavati Max team to schedule an appointment at : +91 22 6836 0000