Deli Meats on a Diet? On the whole processed meats are best avoided. To some degree there will be a carb and/or fat overload and Gammon may not be the best choice dedending on your diet type. Gammon fat and carb content can be variable and those calories need counting for weight loss. Eat Gammon in moderation. Below you will find the calorie and nutrition data for your query ‘Calories in Gammon’ plus other popular serving quantities. See Calories, Carbs, Fat. Protein and find sound advice on diets, including keto and low carb. Also check out our recipes and meal plans with Gammon Continue Reading →