4 doctors weighed in:

What happens when the thyroid gland is underactive?

4 doctors weighed in
Dr. Michael P Vaughn
Internal Medicine - Allergy & Immunology
2 doctors agree

In brief: Hypothyroidism

Low levels of thyroid hormone can result from a "sick" underproducing thyroid gland (thyroid disease) or a normal thyroid gland that is being under-stimulated by the pituitary gland; releasing sub-optimal amounts of thyroid stimulating hormones.
Symptoms include weight gain, fatigue, hair loss, skin drying, constipation, as well as many other less common features.

In brief: Hypothyroidism

Low levels of thyroid hormone can result from a "sick" underproducing thyroid gland (thyroid disease) or a normal thyroid gland that is being under-stimulated by the pituitary gland; releasing sub-optimal amounts of thyroid stimulating hormones.
Symptoms include weight gain, fatigue, hair loss, skin drying, constipation, as well as many other less common features.
Dr. Michael P Vaughn
Dr. Michael P Vaughn
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Dr. Jack Mutnick
Internal Medicine - Allergy & Immunology

In brief: Hypothyroid

Fatigue increased sensitivity to cold constipation dry skin unexplained weight gain puffy face hoarseness muscle weakness elevated blood cholesterol level muscle aches, tenderness and stiffness pain, stiffness or swelling in your joints heavier than normal or irregular menstrual periods thinning hair slowed heart rate depression.

In brief: Hypothyroid

Fatigue increased sensitivity to cold constipation dry skin unexplained weight gain puffy face hoarseness muscle weakness elevated blood cholesterol level muscle aches, tenderness and stiffness pain, stiffness or swelling in your joints heavier than normal or irregular menstrual periods thinning hair slowed heart rate depression.
Dr. Jack Mutnick
Dr. Jack Mutnick
Thank
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