Immunity is like a strong line of defense within the human body, defending our health against the invasion of diseases. Once there is a gap in this line of defense and the immunity is low, various diseases can be taken advantage of and become the source of all diseases that threaten health. Once there is a problem with this immunity, the endocrine system will also be disrupted, and the balance of the whole body will be disrupted. The thyroid gland, an important endocrine gland, is inextricably linked to immunity. Patients with hyperthyroidism and hypothyroidism often have low immunity, and the body's protective mechanism is impaired, resulting in fatigue, colds, fevers, respiratory infections and other diseases. This not only causes untold suffering to the patient, but can also lead to other complications that can make the health condition worse. 
The relationship between the thyroid gland and immunity
The thyroid gland is an indispensable immune guardian in the human body. It has a great role to play, carefully regulating the body's immunity and guarding our health. Its main task is to synthesize and secrete thyroid hormones, which act like the spark of life, igniting the flame of metabolism and helping our bodies thrive. Once the thyroid gland is abnormal, it is like the flame of life is out of control, and there may be hyperthyroidism, overburning, or hypothyroidism swaying faintly. These changes affect the process of life, reminding us to cherish and care for this small organ and maintain the normal functioning of thyroid function. Symptoms of hyperthyroidism are like tigers, making people panic and trembling, tired and weak, appetite is like a surging river, but weight is like a candle in the wind. The patient was excited, like a flame burning.
Hypothyroidism is like a winter haze, dizziness, listlessness, slow heart rate like a snail, loss of appetite, constipation like a cut, body fat, hair loss like frost. Both are diseases of abnormal thyroid function, with different symptoms, which need to be carefully distinguished and prescribed the right medicine.
Causes of low immunity in thyroid patients1. Autoimmune thyroid disease
Hashimoto's thyroiditis is the most common cause of hyperthyroidism and hypothyroidism. It is an autoimmune disease that destroys thyroid follicles, which in turn affects the secretion of thyroid hormones. 2. Iodine excess or iodine deficiency
Excessive iodine intake can disrupt the normal functioning of the thyroid gland, causing it to lose its balance and function, which can lead to thyroid disease. And iodine deficiency can likewise lead to health problems that can compromise immunity. 3. Lack of vitamins
Vitamin A deficiency, like behind the scenes, silently increases the incidence of thyroid disease. The insufficiency of vitamin D is like a sword, weakening the binding force on parathyroid function, thus triggering secondary hyperparathyroidism. The lack of vitamin B group, like a tiger descending from a mountain, directly affects the productivity of thyroid follicles, leading to the occurrence of hypothyroidism. 
How to improve immune function in patients with thyroid disease
1. Get enough sleep
Lack of sleep is like the palette of life losing a touch of tranquil gray, affecting our immunity. It is like an irresponsible conductor who disrupts the harmony of the endocrine system, especially the thyroid dysfunction. And our immune system, like a soldier on the battlefield, is greatly weakened by exhaustion. 2. Keep exercising
The results of the study show that proper physical exercise can increase the number of immune cells in the body, which in turn improves the efficiency of the immune system. Exercise not only improves the regulatory function of the nervous system and promotes blood circulation, but also makes the cells of the immune system work more efficiently. For thyroid patients, exercise is essential, but moderation is required. They can choose the type of exercise that suits them, such as walking, jogging, tai chi, yoga, etc., which not only helps the body to be healthy, but also improves immunity and strengthens resistance. 
3. Diet
To stay healthy, you should eat plenty of foods rich in vitamins A, B, and D. These foods include spinach, bamboo shoots, mangoes, carrots, corn, potatoes, pumpkin, romaine lettuce, broccoli, eggs, lean meat, pork liver, and cantaloupe, among others. Not only are they delicious, but they're also highly nutritious and provide your body with the nutrients it needs to keep your body healthy. 4. Mentality
If you are trapped in the whirlpool of bad emotions for a long time, the strength of the immune system will gradually weaken, as if it is a fortress that has been weakened, allowing cancer cells to take advantage of it. Therefore, maintaining a happy mood is the golden key to protecting your health, and when you encounter troubles, you may as well open the knot in your heart and let your body and mind stretch. Take care of your thyroid gland