Alcohol has other harmful effects and can lead to weight gain. Fiber intake should be about 40 grams per day. High dietary fiber intakes should be avoided in patients with upper gastrointestinal problems. Also the increasing of dietary fiber intake sometimes causes abdominal cramping, diarrhea and flatulence. These can be minimized by increasing fiber intake gradually.
Foods contain many natural chemicals that can stimulate the heme biosynthetic pathway.
These foods are considered porphyrinogenic. A porphyric will also want to avoid high intakes of protein. Most likely, none of these foods need to be completely avoided in porphyria. One should also remember that tomatoes contain a high amount of sulphur, and that sulphur is contraindicated in porphyrics. Tomatoes can be eaten, but in moderation.