1 Talk to your husband about the importance of lean protein at each meal. 2  It will help him stay satisfied longer and manage his hunger throughout the day. 3  Lean protein includes: seafood, poultry, eggs, lean beef, legumes, tofu and low-fat dairy foods. 4  Cook with a lot of fruits and vegetables as well.esearch a few different diets to see if any of them would be easy to follow and help your husband lose weight. 1  There are a variety of popular diets out there. 2  Low-carb diets are very popular. 3  Low-calorie and portion control diets are also popular.