A patient with Addison's disease is consulting a nurse about dietary modifications. Which dietary change should the nurse recommend to manage this condition effectively?

Choice A rationale While fatigue is a common symptom of Addison's disease due to glucocorticoid deficiency, high-sugar snacks are not a therapeutic recommendation for long-term management. Patients often experience hypoglycemia because cortisol is necessary for gluconeogenesis, but complex carbohydrates are preferred over simple sugars to maintain stable glucose levels. Rapid spikes and drops in blood sugar from high-sugar snacks can worsen the metabolic instability associated with adrenal insufficiency and lead to further energy fluctuations. Choice B rationale Adrenal insufficiency leads to a deficiency in aldosterone, which normally functions to excrete potassium and retain sodium. Consequently, patients with Addison's disease are at a high risk for hyperkalemia, where serum potassium levels exceed the normal range of 3.5 to 5.0 mEq/L. Increasing the intake of potassium-rich foods would be dangerous as it could lead to cardiac dysrhythmias and neuromuscular complications. Patients are typically advised to avoid salt substitutes that contain high amounts of potassium. Choice C rationale Reducing sodium intake is contraindicated in Addison's disease because the lack of aldosterone results in excessive renal wasting of sodium. Patients often experience hyponatremia, where serum sodium levels fall below the normal range of 135 to 145 mEq/L. Lowering sodium intake further would exacerbate fluid volume deficit and hypotension, potentially triggering an addisonian crisis. Sodium restriction is generally reserved for conditions involving fluid overload, such as heart failure or renal failure, rather than adrenal insufficiency. Choice D rationale In Addison's disease, the adrenal cortex fails to produce adequate mineralocorticoids, specifically aldosterone. This leads to the inability of the kidneys to retain sodium, resulting in chronic salt wasting and dehydration. Increasing dietary sodium intake helps maintain extracellular fluid volume and prevents the development of orthostatic hypotension. During periods of stress, heat, or intense exercise, the need for supplemental sodium becomes even more critical to prevent vascular collapse and maintain electrolyte homeostasis.