The thyroid gland secretes thyroid hormones that travel from the gland through the blood to all parts of the body, where they do all their work. It controls how your body uses food and energy. It is responsible for many processes in the body, like regulating temperature, hunger, heart rate, menstrual cycle, iron metabolism, nervous system, blood cholesterol levels, etc.
The body may start acting strangely if the secretion of the hormones goes up or down. In such cases parts of your body may work too slowly or tire you down easily, depending on the kind of anomaly in the functioning.
If one is suffering from hyperthyroid (producing too much thyroid hormones), or hypothyroid (producing fewer hormones) the causes may be as follows:
• Toxins- Our environment is full of toxins and there’s very little we can do to eliminate all of them. Toxins can have a big impact on one’s health, including raising the hormone secretion.
• Dieting- Restrictive dieting or dropping entire food groups from your diet can actually hinder your weight loss which affects your thyroid function. The way we eat can actually help, or hurt, the thyroid gland.
• Genetics- Genes plays a prominent role in the determination of thyroid. Research says that if a parent is affected with thyroid then chances of developing the case in the child is as high as 99 per cent.
• Menopause- If you are experiencing symptoms of menopause, do not hesitate to discuss them with your doctor. If you feel that the symptoms are persisting despite appropriate therapy, it may be worthwhile to have your thyroid-stimulating hormone (TSH) levels checked. Millions of women with menopausal symptoms, even those taking oestrogen, may be suffering from undiagnosed thyroid disease.
• Vitamin deficiencies- Deficiency of vitamin D is also specifically associated with autoimmune thyroid disease (AITD). Patients suffering from hypothyroid have low levels of this important vitamin.
• Excess iodine- Iodine intake is preventative. Iodine deficiency is clearly related to hypothyroid disorders, and adequate iodine over nutrition also contributes to autoimmune thyroid disorders and hypothyroidism. But too much of a good thing is not necessarily better.
T3 and T4 regulate how one’s body uses its energy and how food is used up quickly. If one becomes deficient in these then one’s body becomes sluggish, also known as Hypothyroidism. This results in weight gain, dryness, constipation, mental slowness, sensitiveness to cold and deep voice.
Hypothyroidism is commonly caused by Hashimoto’s thyroiditis, where the body produces antibodies to attack the thyroid gland, for example after a viral infection.
Also, if you have too little iodine in diet then it can lead to hypothyroidism as the conversion of thyroxin (T4) to triiodothyronine (T3) is regulated by iodine. Calcitonin is responsible for bone health.