Wow, whenever I get on one of these tangents of researching health, food, or such subjects, I can spend hours finding and reading lots of scary info.
Truvia is a processed derivative of the natural sweetener Stevia. Why process a natural sweetener like Stevia? To obtain a patent and make money. Red flag enough to be concerned but I find references to Cargill, the maker of Truvia, using GMO-modified corn for one of the ingredients in Truvia. Here is an eye-opening article about Cargill.
Here are some articles looking at the problems with high fructose corn syrup.
Here is an article explaining more about GMO (genetically modified organisms) food.
I'm not saying that I base my life on what I read on the Internet but when that information points to a simpler life, more in harmony with God's creation then I will tend to agree.
May I suggest, read, educate yourself, look for locally grown, minimally processed foods.