Please clink on the link below. It's relating to mineral deficiencies in animals.
the lack of the vitamin that is in carrots.
No, Pica is not a contagious condition. Pica is generally caused by a mineral deficiency, and someone with a mineral deficiency can't pass that deficiency on to others.
Dwarfism is zinc deficiency. hypothyroidism is iodine deficiency.
Occaisonally the media has reported a cow eating a rabbit or something. Mostly this is from a mineral deficiency, called Pika, that stems from a nitrogen deficiency in the diet, and cows that have this deficiency will turn to eating carrion or small animals to satisfy that deficiency craving. A healthy cow that has all her mineral and vitamin requirements met will not turn carnivorous. She will be what evolution made her to be: a large, herbivorous grazer.
I think it would be a deficiency is a vitamin or mineral. Increase the relevant vitamin or mineral to optimum levels.
iron
Some potential(!) pitfalls that might occur include: osteoporosis (due to reduced calcium supply), several problems caused by mineral- and protein deficiency. In general one should take care about the vitamin, mineral and protein supply when starting with a diet.
Often it is a mineral deficiency that causes the twitch - usually a magnesium deficiency.
Iron.
mineral deficiency
iodine
Cramps are more likely the result of a mineral deficiency of the body. Try to add a couple of mineral tablets to your diet. On the other hand thyroid problems can also lead to this and you may need to talk with your doctor.