1.) Carbs are a "hot" fuel, they have been shown to increase markers of oxidative stress and inflammation unless paired with phytonutrients as is typically the case in whole fruits and vegetables. This is because sugars are highly reactive in comparison with fats (particularly fructose).
2.) Highly quality carbs, such as in beans, barley, certain kinds of sweet potatoes, etc, are fermented by by your gut bacteria into short chain fatty acids. Short chain fatty acids have been linked to lower inflammation, improved mood and memory, weight loss, longer life span, the list goes on.
