im a social sceinces undergrad student im going for a psych degree and gonna try to get a honours in social science psych all my friends are freaking me out by saying that i need a degree in liffe sci in order to get into medical school is that true? im thinking about applying for mcmaster medical school

Your friends are wrong.

I wrote two articles on medical school over the summer. You can check them out here and here.

View this pdf for the selection statistics of the class of 2010 for the McMaster Medical School. Notice the amount of students accepted with degrees other than life science. There is no medical school I have seen that gives preference to program. They do, however, give preference to some courses you take, and make sure you take all the prerequisites.