Get your Digestive and Immune Health in Shape with Dr. Tennant’s® Gut Bootcamp Bundle! You’re only as healthy as your gut! But… digestive issues seem to plague most of us. 60-70 million Americans are living with digestive disease & nearly 2/3rds have had a GI issue in the last week, including heartburn/reflux, bloating, diarrhea, & constipation. Digestion is important & so is your immune system. Did you know that 70 - 80% of your immune tissue is situated in your digestive tract?