Can excessive masturbation lead to obesity? hypothesis: excessive masturbation leads to increased calorie intake, but spends less calories than sex.

You are correct, but: This is true of any and all activities in life: if increased calorie intake is higher that the calories used up, then a person can gain weight. However, sexual activities don't cause normal, healthy people to eat more food. That means masturbation is unlikely to alter a person's weight.

What's really up?: Nobody's forcing you to eat, whether or not you're also enjoying your body. Things become excessive when you start missing appointments, not spending time with friends, or otherwise are so obsessed with erotica that it's interfering with your life. We can help if this is the case. Think about that one special person in your future rather than internet trash.