The big issue with processed sugars is that they remove everything but sugar content, it makes your blood sugar spike rapidly, and your body has trouble processing it... Thank you for your interest... I am not sure about maple syrup allergies. Here is a link that might answer your question 🤍
https://www.livestrong.com/article/550546-allergic-reaction-to-maple-syrup/
RE: HOW TO NATURALLY SWEETEN IN RECIPES