Can I safely introduce red meat in my diet?

[*akashesh*]

I haven't eaten red meat for about 12 years. I just never liked it as a child that much and said that I wouldn't eat it anymore. I never craved it or really wanted it. I mainly eat veg and chicken or fish sometimes. And I will eat pork sausages as long as they do not have beef or lamb in them.
I am now really craving red meat. The smell of it makes me hungry, I never used to be bothered about it, in fact it used to make me feel sick.

Is it possible for me to eat it again? And in what form? Will it make me ill?