During winter, metabolism shifts and appetite increases, making portion control crucial even for healthy foods to manage weight. Nutrient-rich options like nuts, seeds, avocados, and sweet potatoes, while beneficial, are calorie-dense. Overconsumption of these foods, especially in larger portions or with added fats, can inadvertently lead to weight gain or hinder weight loss efforts. Mindful eating and moderation are key to maintaining a healthy diet throughout the winter season.