A nurse is teaching a class about dietary guidelines to promote cardiovascular health. Which of the following recommendations should the nurse include in the teaching?

Choice A rationale:
Crohn's disease is not commonly associated with obesity. Crohn's disease is a chronic inflammatory bowel disease that can lead to weight loss due to malabsorption and other gastrointestinal symptoms.
Choice B rationale:
Peptic ulcer disease is not directly linked to obesity. Peptic ulcers are primarily caused by Helicobacter pylori infection or the use of nonsteroidal anti-inflammatory drugs (NSAIDs).
Choice C rationale:
Gastroesophageal reflux disease (GERD) is commonly associated with obesity. Excess weight, especially around the abdominal area, can contribute to increased pressure on the stomach and lower esophageal sphincter, leading to the backflow of stomach acid into the esophagus and causing symptoms of GERD such as heartburn and regurgitation.
Choice D rationale:
Celiac disease is not typically associated with obesity. Celiac disease is an autoimmune disorder triggered by the ingestion of gluten, a protein found in wheat, barley, and rye. Individuals with celiac disease often experience weight loss and malabsorption due to intestinal damage.

Choice A rationale:
Maintaining a low-protein diet is not the appropriate instruction for a client taking a monoamine oxidase inhibitor (MAOI). While dietary restrictions are associated with MAOIs, it's primarily focused on avoiding foods rich in tyramine, which is not limited to just protein-containing foods.
Choice B rationale:
Not eating grapefruit while taking medication is generally applicable advice, but it is not specific to MAOIs. Grapefruit can interfere with the metabolism of certain medications by inhibiting specific enzymes. However, it's not a concern solely related to MAOIs.
Choice C rationale:
Avoiding aged cheeses while taking this medication is the correct instruction. Aged cheeses contain tyramine, which can lead to a hypertensive crisis when consumed with MAOIs. Tyramine interacts with MAOIs to increase blood pressure, potentially causing a serious reaction.
Choice D rationale:
Reducing intake of high-calorie foods is not a primary concern when taking MAOIs. The main dietary focus is on avoiding tyramine-rich foods to prevent dangerous interactions. High-calorie foods are not directly contraindicated with MAOIs.