Notably, numerous frozen or shelf-stable foods have a minimal effect on your blood sugar levels. Just be sure to choose natural peanut butter brands that don’t contain added sugar, as sugary foods negatively affect blood sugar control. Some varieties, including white button, contain ergothioneine, an amino acid that has antioxidant properties and may aid blood sugar management ( 18 , 19 ). Olive oil Olive oil is rich in anti-inflammatory compounds, and consuming it regularly may help you manage your blood sugar levels ( 27 ). Meal planning tips Keeping blood sugar levels consistent is an important consideration for people with diabetes.