My brother is verbally abusive, what do I do?

Hi, I am a 21 year old female home from college and ever since I've been home, my younger (19 year old) brother, who is also home from college, has been extremely verbally abusive to me. I have no idea why he decided to start doing this; we had always had a normal 'sibling rivalry' but it has never been anywhere near this bad. He angrily calls me a *****, tells me I'm ugly, tells me I smell, etc. That wouldn't bother me as much if he didn't combine it with comments like "everyone likes it better when you're not around," "it'd be better if you were never alive," "you always have a smug look on your face and no one likes you because of it," etc. I actually have no idea what I have done to warrant any of these comments. My parents are equally shocked but don't really do anything to defend me. I don't say anything in return because then he'll just come up with something worse to say. Last time I attempted to defend myself he made fun of me for my struggle with bulimia and said that I should just kill myself because that's the only way I'll get over my disorder. He said that no one in my family likes me and that he can't stand me. I really don't know what to do. I feel so depressed and I'm starting to believe his comments. I haven't even left my room today because I'm too scared of what he'll say to me and because it honestly makes me feel sick to my stomach when he talks to me this way. Any advice would help, thanks so much :)