Kathryn Marsden's Good Gut Healing covers many common ailments that can affect the digestive system and bowel including acid reflux, allergies, candida, constipation, IBS and ulcers.
Gut Instinct by Pierre Pallardy describes your stomach as a second brain, giving techniques to take control of your body and heal from within, overcoming digestive problems, fatigue and much more.
The Probiotics Revolution by Dr Gary Huffnagle and Sarah Wernick is a guide to the beneficial bacteria that inhabit the gut and play a vital role in ensuring good health far beyond just the digestive system.