foodamentalist
A fanatic follower of a particular food regimen, e.g., veganism, raw foods, fruitarianism. A foodamentalist considers food a political statement as well as nutrition, and is often overheard evangelizing his/her health benefits. NOTE: if you ever discuss your colonic output with anyone, you are a FOODAMENTALIST.
Djennifar, a confirmed foodamentalist, was pleased to share with everyone the details of how barley green had enabled her to reach the sought-after 18 inches of colonic output every day.