When life hands you lemons, eat 'em! That's right, get ready to pucker up, because lemon juice helps lower blood sugar, thanks to its incredible acidity (just thinking about lemons starts your salivary glands gushing). Because of that acidity, even a little lemon juice can lower the glycemic load (GL) of any meal. Lime juice should have a similar effect. Read on to learn more about the benefits of adding lemons to a healthy diet.