" I know they say it makes you gain weight"
Yes, "they" say that, but "they" are talking out their elbows. There's no real evidence. There have been studies finding that people who drink diet sodas tend to weigh more than people who don't drink soda at all, but the scientists who did those studies made it VERY clear that they can't tell whether it's because diet soda makes you gain weight, or because gaining weight makes you switch to diet soda! They also suspect that people who drink a lot of soda have other unhealthy habits.
I drank a lot of diet soda before and during my weight loss. Like you, I felt that it helped me resist cravings for sweets. Since then, I've quit for a year or more at a time because I didn't want to spend the money. I find that for me, it makes NO difference.
Colas (regular or diet) are definitely bad for your teeth, and for your pocketbook. Those might be good enough reasons to quit. But if you think diet sodas help you, then ignore Bob Harper. He's a "trainer" with no medical or research background; what he says is just an opinion, no better than your own opinion. He seems like a very nice guy, but he doesn't know you, you don't know him, and there's no reason you should trust him more than yourself.
| current weight: 132.0