Will eating carbs at night cause me to gain body fat?
No, total calories determine weight loss or gain, not timing or eating carbs at night.
Often, when carbohydrates are eaten late at night, an increase in weight is seen the next morning. This is because of two reasons.
- An increased amount of food in the gut, causing an increase in scale weight. This will go away once the food is digested.
- Carbohydrates cause an increase in water retention (~4 grams of water is held for every gram of carbohydrate). This water retention is temporary, will go away after ~one day, & is not fat.