While simple carbs like glucose and fructose can be a great source of energy, complex carbohydrates like FODMAPs (lactose, GOS and FOS), make up chains of sugar molecules that our bodies cannot use unless they are broken down.
Some fibers are great for our microbiome and can act as prebiotics, helping bacteria grow in our gut. However, when most carbs can be broken down, fiber is a bit more stubborn, selfishly passing through our bodies undigested.
Rebellious and disruptive, FODMAPs can often disturb smooth digestion. And when they bump into our gut microbiome, it can get quite windy (mainly due to the gas-releasing fermentation process). Though natural, this process can cause digestive pain and discomfort and even make us avoid entire food groups.