Is Pepsi harmful to diabetes?

Pepsi and all other sugary drinks....

I would say Pepsi and other fizzy sugary drinks are bad in general. Diet versions of the sodas aren’t as bad.

Harmful TO diabetes?  In English, we would say "harmful for diabetics", and yes, it is.

Try diet Pepsi, no sugar

Sugar is harmful to diabetes.  Sugar-free Pepsi would not be.

BUT the carbonation etches your teeth and they turn yelllow-grey much sooner in life, and the carbonation can cause bleeding stomach ulcers over time, and the carbonation can leach calcium out of your bone and cause osteoporsis (my mother-in-law has it SO badly, that if she was to step on a ladder, she would break the bones of her feet, and she only weights 95 pounds because she's a tiny little lady).

Don't drink pop.

It depends on how much sugar there is in the 'type' of Pepsi you drink

and how much you drink.

Diet Pepsi? Nope.     

Considering the fact that pepsi is pretty much all sugar with a couple of chemcials and some brown food coloring, YEAH, it is not good for anyone with diabetes. 

Diet is fine but not regular 

Sugar? Duh?