A 2012 study at Oxford University found that the fat in your food ends up on your waistline in less than four hours. Carbohydrate and protein take a little longer, because they need to be converted into fat in the liver first and it takes nine calories of protein or carbohydrate to make 1g of fat.
Do you immediately gain weight after eating?
What you eat -- or overeat -- does not instantly turn into weight gain. How much you eat over the course of a few days or week, however, can result in weight gain. To find out more about how long (and how much food) it takes to gain weight, The Huffington Post Australia spoke to two accredited practising dietitians.
How long does it take for weight gain to show?
By eating 1,000 excess calories per day over 6 months, you may see a weight gain of around 25 pounds (11.4 kg), though a larger portion of this gain may comprise fat ( 4 ). Weight gain progress will vary depending on your body size, goals, and a number of the other factors previously discussed.
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