In 90% of adults, growth hormone deficiency is a result of benign (non-cancerous) tumors called pituitary adenomas, commonly diagnosed in patients in their 30s or 40s. Rare causes of adult GHD include diseases such as sarcoidosis, tuberculosis, histiocytosis, and hemochromatosis (iron overload).
Dr. Jesse Stoff (M.D.). Itâs also important to note that no hormone works in isolation from other hormones; they all function within a complex, subtle web of interconnectedness. Reference: Dr. John Lee Many hormones have an effect on the immune system, disease and each other.ee Immune 101. Fast Facts. 1  An imbalance in thyroid and adrenal hormones, testosterone, the estrogenâs (estrone, estradiol, estriol), and progesterone can affect the immune system. 2  Our chemical environment (xenoestrogens) and nutrition are both contributing factors to hormone imbalance.
The hormone also stimulates kidney production of the active form of vitamin D, which triggers increased calcium absorption from the gut. Low levels of PTH -- due to autoimmune disease or another cause -- can lead to abnormally low blood calcium.itamin D. Vitamin D acts as a hormone in your body to help regulate blood calcium. This steroid hormone is so vital in maintaining calcium balance that its active form is sometimes referred to as calcitriol.