I’ve been drinking saccharine in my iced tea since I was a kid. I’m 69 y.o. I’ve never been in favor of aspartame (nutrisweet). I have some splenda for baking, but I don’t use it often. I usually use sugar alcohols, and monk fruit powder. (BTW, I’m back on a keto diet, but I discovered that instead of the “less than 20 net carbs per day” rule that all the keto ‘blogs’ say is necessary to achieve ketosis, is inaccurate. It is no more than 50 net carbs per day, in order to achieve ketosis).
https://www.healthline.com/nutrition/how-long-does-it-take-to-get-into-ketosis
https://www.mayoclinic.org/is-the-keto-diet-for-you-a-mayo-expert-weighs-in/art-20457595
Well, it is different for everyone, but you fan know your cut off by using keto strips occasionally.