A nurse is assisting with meal planning for a client who has hypothyroidism. The nurse should reinforce with the client that she should increase her daily intake of which of the following nutrients?

Choice A rationale Hypothyroidism results in a slowed metabolic rate which significantly decreases gastrointestinal motility, frequently leading to chronic constipation. Increasing dietary fiber intake to approximately 25 to 35 grams per day is essential to promote regular bowel movements and prevent fecal impaction. Fiber adds bulk to the stool and retains water, which helps compensate for the physiological slowing of the digestive system associated with low thyroid hormone levels and decreased peristaltic activity. Choice B rationale While protein is necessary for general tissue repair and cellular function, increasing protein intake is not a specific therapeutic priority for managing the common symptoms of hypothyroidism. Clients with hypothyroidism often have a decreased metabolic rate, and unless they have a specific deficiency, excessive protein does not directly address the primary clinical complications such as constipation or bradycardia. The focus remains on fiber to manage the most common gastrointestinal side effects of the disease. Choice C rationale Polyunsaturated fats are healthy fats that can support cardiovascular health, but they do not provide a direct therapeutic benefit for the primary symptoms of hypothyroidism. While a balanced diet is always encouraged, increasing these fats does not mitigate the slowed metabolism or the resulting constipation that fiber addresses. Clients should maintain a heart-healthy diet, but fiber remains the priority nutrient for managing the specific gastrointestinal sluggishness characteristic of low thyroid hormone states. Choice D rationale Monounsaturated fats are another form of healthy dietary fat that supports overall health but lacks a specific role in correcting the metabolic imbalances caused by hypothyroidism. Hypothyroidism management focuses on hormonal replacement and symptomatic relief of constipation and weight gain. Fiber is more effective than monounsaturated fats at managing the reduced gastric motility. Therefore, while these fats are not harmful, they are not the priority nutrient the nurse should emphasize for this condition.