Late Night Snacks Do Make You Gain Weight
Even if it may not be the best option from a medical standpoint, we all like a good snack at night. Popular health blogs or personal trainers would probably answer "yes" without hesitation. However, medicine maintains that eating at night or during the day, or basically any other time in between, makes no difference because a calorie is a calorie regardless of when you consume it.
Even if that is true, eating at random times does have other negative effects on weight loss. This is especially true in the evenings, when it may be harder to find fresher, healthier eating options. We are more prone to eat foods that are high in calories and generally unhealthy during those times. If it doesn't add too many calories to your daily intake, some experts even suggest having a small nutritious snack right before bed.
Even if eating late at night might not have an immediate impact on your weight, it makes sense that the later you snack, the more likely it is that you'll eat something unhealthy, which will have an unfavorable impact on your weight.