Intake of exogenous steroid causes.
**Core Concept**
Endogenous steroids, such as cortisol and aldosterone, are essential for various physiological processes. However, exogenous steroid intake, particularly long-term or high-dose administration, can disrupt the body's natural hormonal balance and lead to various adverse effects.
**Why the Correct Answer is Right**
Exogenous steroid intake can cause **suppression of the hypothalamic-pituitary-adrenal (HPA) axis**. This suppression occurs due to negative feedback mechanisms, where the exogenous steroids bind to glucocorticoid receptors in the brain, leading to decreased secretion of corticotropin-releasing hormone (CRH) and adrenocorticotropic hormone (ACTH). As a result, the adrenal glands produce fewer endogenous steroids, including cortisol and aldosterone.
**Why Each Wrong Option is Incorrect**
* **Option A:** While exogenous steroids can cause weight gain, this is not the primary effect of their intake. Weight gain is a secondary consequence of steroid-induced changes in body composition and distribution of body fat.
* **Option B:** Exogenous steroid intake does not typically cause anaphylaxis, which is a severe, life-threatening allergic reaction. Anaphylaxis is more commonly associated with other types of medications or allergens.
* **Option C:** Although exogenous steroids can cause changes in blood sugar levels, they do not typically cause type 2 diabetes mellitus. Steroids can, however, worsen existing diabetes or increase the risk of developing insulin resistance.
**Clinical Pearl / High-Yield Fact**
It's essential for physicians to recognize the potential for steroid-induced HPA axis suppression, particularly in patients receiving high-dose or long-term steroid therapy. This can lead to adrenal insufficiency, which may manifest as fatigue, weight loss, or hypotension when the steroids are withdrawn.
**Correct Answer: D. Suppression of the hypothalamic-pituitary-adrenal (HPA) axis.**