Final answer:
The nurse should instruct Mr. Mazzarese to review information about food choices and portion control, and suggest participating in personal fitness activities to help him lose weight.
Step-by-step explanation:
The nurse should instruct Mr. Mazzarese to review information about food choices and portion control, as this can be an effective way to start losing weight. By making healthier food choices and controlling portion sizes, he can reduce his calorie intake and create a calorie deficit, which can lead to weight loss. It's important for Mr. Mazzarese to understand that a body mass index (BMI) measurement doesn't take muscle mass into consideration, so it's not the only factor to consider when determining if weight loss is necessary.
In addition to focusing on food choices, Mr. Mazzarese can also benefit from participating in personal fitness activities. Regular exercise can help burn calories, increase muscle mass, and improve overall health. However, it's important for him to start with activities that he enjoys and that are suitable for his current fitness level.