Can you gain weight by eating mushrooms?

While mushrooms are considered to be low in calories and fat, they can be part of a weight gain plan when combined with other foods as part of a healthy, balanced diet and when consumed in large quantities. To gain weight, focus on a combination of nutrient-dense, high-calorie foods, regular exercise, and sufficient rest. It's always best to consult with a registered dietitian to tailor a personalized weight gain plan to your individual needs and health goals.