I'm applying to the Texas med schools system and the requirement is at least 2 LOR's. I have two professors that I have worked closely with and know me well so I can meet the basic requirement, but I have heard that 3 LOR's or more would be preferrable. I might be able to find a third person to recommend me but it won't be as strong as my first two. Should I go ahead and get 3 LOR's? Also I've heard the theories that the letters should come from natural science professors...how true are those theories? Thanks in advance!