There are no dietary laws in Bahá'í theology, which seems unusual, since they have been a part of every religion in the past. Unless you want to call alcohol a food, in which case, there is a specific law against ingesting that.
'Abdu'l-Bahá did answer questions about diet and nutrition while speaking in the West, saying that science and medicine would eventually be developed enough to provide better understanding of nutrition and health. He even suggested that humans are most naturally vegetarian. So the latest article from the Baha'i site at BellaOnline.com asks:
Why Aren't Bahá'ís Vegetarian ?
Some believers may indeed be vegetarian, but that is a personal choice and not a religious law.
http://www.bellaonline.com/articles/art183782.asp
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