if you are cooking your eggs then nothing to be worried about. if you are eating the egg white raw (in large quantity), you might suffer from biotin deficiency in a long run. this is because egg white has a glycopeptide called avidin which when consumed binds with biotin in your body. hence the solution is to cook the egg white before consuming. better still, just eat the whole egg raw (egg yolk has tons of biotin and it binds and inactivate the avidin in egg white).