Green tea, golden milk, coffee, dairy milk and 100% veggie juice are all great choices. Green TeaDietitians agree that green tea is a standout beverage on so many levels, including steadier blood sugar and protection from inflammation. For starters, green tea boasts a cocktail of substances that have been linked to better blood sugar, particularly catechins like EGCG. According to a 16-study systematic review and meta-analysis, curcumin may also significantly lower fasting blood sugar and A1C levels. Be choosy about juice: While 100% vegetable juice is a great choice, fruit juice may not work for everyone.