Consuming refined carbohydrates or sugar in the evening can lead to elevated overnight blood glucose levels (140-150 mg/dL), especially in those with insulin resistance.

“so what happens a lot for people is that they'll eat meals at night and when do people normally have sweets and treats and desserts at night that's like actually the worst thing you can do I'm not encouraging sweets ever but you're gonna do it do it like in the morning when you first wake up honestly don't do it at night I see this over and over every single day if somebody will have carbohydrates refined carbohydrates sugar in the evening and their glucose values overnight while they're sleeping stay 140-150 all night long so the whole time you're sleeping it is in these really elevated diabetic levels because your body just doesn't process food that well late at night especially if you're already showing signs of insulin resistance”