Yes, poor digestion can be a huge factor. You might want to try a probiotic called Effective Microorganisms, which not only help good bacteria proliferate, but they are also high in antioxidants and bring a calming and peaceful energy when you consume them. They are also powerful deodorants, strong enough to deodorize skunk spray. Commercial brands include SCD Essential Probiotics and Teraganix Pro EM-1, both available from Amazon.