Dietary intake and nutritional status of young vegans and omnivores in Sweden.
Vegans had dietary intakes lower than the average requirements of riboflavin, vitamin B-12, vitamin D, calcium, and selenium.
Intakes of calcium and selenium remained low even with the inclusion of dietary supplements.
CONCLUSION:
The dietary habits of the vegans varied considerably and did not comply with the average requirements for some essential nutrients.
Am J Clin Nutr. 2002 Jul;76(1):100-6.