Candida albicans is a naturally occurring yeast organism that inhabits the intestines, genital tract, mouth, esophagus, and throat. Normally, this fungus lives in healthy balance with the other bacteria and yeasts in the body; however, certain conditions can cause it to multiply, weakening the immune system and causing an infection known as candidiasis. When candida yeast spreads throughout the body, it poisons the bloodstream and causes a hypersensitivity reaction. This can lead to infections throughout the body, food sensitivities, leaky gut, oral thrush and irritable bowel symptoms.