Which one is the most healthiest truvia or splenda? trying to find a sweetner that won't cause health issues such as cancer or any kind of disorders

No worries/eitherone: Sweetners are proven safe(in humans) so you do not have to worry. I personally like and prefer splenda. But you can chose the one that tastes better. There is no risk of cancer with their use!

Stevia: It's best to stay away from chemical sweeteners. Give stevia a try. It's a root made into a powder and is very sweet so you only need a little. Once you stop using chemical toxins your body will work to eliminate them. Hydration and exercise will help. Intermittent fasting is in the research these days with lots of benefits but do that with the guidance of your doc.