skippy natural and heart/health?

I LOVE peanut butter and usually eat 2 peanut butter sandwiches on whole wheat bread daily. The peanut butter I use is always Skippy Natural. Is this kind still bad for my arteries and waist line? I also like jiff reduced fat. Which is better and will peanut butter have any bad effects on me? And will it still make me gain a ton of weight even though I balance my calories out instead of letting pb add to them? Any other health facts about PB would be greatly appreciated 🙂