I just read about a couple of them being bad, xylitol and erythritol, and knew sucralose was bad too. Now I'm wondering if there's any sugar-substitute that's not dangerous.
The -ol sweeteners are only bad if heart disease run in your family or you are clot prone. Their danger is that they are platelet activators. So, they make your blood more "sticky". This means that you are more likely to form clots, which is the basis for cardiovascular disease. People with a family history of heart disease typically have "sticky" platelets. Same for people with family that have PE or DVT. For people that bleed like a stuck pig or have a known genetic mutation that makes them less likely to clot, it's no risk. I wouldn't be surprised if you take a baby aspirin every day that you can eat all the -ol sugar you want since the platelet activation effect is not strong, but it is strong enough to be clinically relevant.
Stevia and monkfruit are pretty safe.
Stevia is only safe if its purified rebaudioside A. If it's just unpurified Stevia leaf that is broken up, it's possible it can cause liver failure because rebaudioside B is a liver toxin. Some people can tolerate it, some can't. The people that may react to it are only 0.8% of the population, but if you happen to be one of them, even ingesting a small amount of whole stevia will murder your liver, and the only solution is a liver transplant.
Monkfruit, pure, is safe. If it's cut with erythritol, you end up with the same problem as pure erythritol, which is sticky platelets. If it's mixed with maltodextrin, just eat sugar, since our bodies convert maltodextrin directly into sugar, so you are basically eating the same thing.
Artificial sweeteners are a “solution” to this problem.
You’re really better off drinking smoothies or water instead though.
The only things you can drink that are good for you are filtered water (tap water is full of shit, and bottled water is even worse), tea (green, black, etc... whatever, except white tea, that is a waste of time) hot or cold, and coffee (with or without milk, don't put anything else in it) hot or cold, and a moderate amount of any milk not skim, and then up to a reasonable amount of skim milk each day. Everything else is crap for you, literally speaking, as a result of recent research done into beverages.