While lunch is usually considered a healthy meal, there are some foods that can secretly contribute to weight gain. These 10 foods, high in unhealthy fats, sugars, and refined carbs, can add unwanted calories. While lunch is usually considered a healthy meal, there are some foods that can secretly contribute to weight gain. These 10 foods, high in unhealthy fats, sugars, and refined carbs, can add unwanted calories. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle