Regular Pop-tarts already have about the max added sugar per day for women 24 g, 36 g for guys.
At your next checkup, ask for fasting insulin and CRP test if they can get approved, or it doesn't cost a lot at a private lab to see where these are at. Then you can calculate the following that might indicate issues early. TG/HDL: Triglycerides ÷ HDL (both mg/dL). HOMA-IR: (Fasting insulin µIU/mL × Fasting glucose mg/dL) ÷ 405. This is about the insulin and inflammation axis, gut/brain health, type 3 diabetes, metabolic healthy, leaky gut.