The most well-known work attributed to Shennong is The Divine Farmer's Herb-Root Classic (simplified Chinese: ç¥åæ¬èç»; traditional Chinese: ç¥è¾²æ¬èç¶; pinyin: ShÃ©nnÃ³ng BÄncÇo JÄ«ng; WadeâGiles: Shen 2-nung 2 Pen 3-ts'ao 3 Ching 1), first compiled some time during the end of the Western Han Dynasty â several thousand years after Shennong might have existed.
Hypothyroidism, also called underactive thyroid or low thyroid, is a common disorder of the endocrine system in which the thyroid gland does not produce enough thyroid hormone. It can cause a number of symptoms, such as poor ability to tolerate cold, a feeling of tiredness, constipation, depression, and weight gain.
In some cases, hypothyroidism results from a problem with the pituitary gland, which is at the base of the brain. This gland produces thyroid-stimulating hormone (TSH), which tells the thyroid to do its job. If your pituitary gland does not produce enough TSH, your levels of thyroid hormones will fall. Other causes of hypothyroidism include temporary inflammation of the thyroid or medications that affect thyroid function.