1) How can you tell if you are psychologically depressed? How do you ask? What if you are only depressed sometimes? I am a first-year psychology student, I live in college, and I seem to be having plenty of mood swings lately. I used to be very bubbly and enthusiastic and happy and relaxed all the time, but lately, I've just been edgy and sad, and I cry a lot. What's going on? I've been at university now for nine months. I'm only seventeen, and I live away from home (and I'm happy about that). I still have fun sometimes, and I get involved a lot, but then something will happen and I just bomb. I feel helpless and useless and angry because I am unappreciated. It annoys my friends and that makes me feel even worse. What's going on?

2) How do I know if I am depressed and need help? For about a year now, I have been easily irritated, angry, I cry when something sad or happy happens, I have lost seven pounds (last year), sometimes I have a hard time sleeping at night. I go over everything I did wrong in a day, and I have a hard time trying to concentrate on reading. I have wanted to mention this to my doctor, but I am very shy about it. He says I am physically healthy. I have tried exercising, and taking warm baths to help me feel better. What is wrong with me?

I really hope you can help me. I'm 21 years old and never had any problems with eating. At 18, I sunk into a very deep depression and since then my eating has not been the same. It started slowly, where I would just skip a meal every now and then, but now I sometimes choose to go for days without eating and it's not because I want to lose weight, even though I have lost quite a bit, I just feel like I can't change anything in my life. I love my friends and I always have a great time with them, but at the same time, I find it so much easier to not eat when with them. That's what I can't understand. Why, if I feel happy around my friends, do I still choose not to eat? I went for almost a week without eating when I was away with them. For some bizarre reason, I feel better about my life when I stick to my decision to not do something, but at the same time, I want to stop, but I'm afraid I'll get really depressed. It doesn't really hurt me, but my friends harass me and I can't help them to understand when I don't even understand. Why am I doing this??

Does exercise really reduce stress? I recently took a new job that is very high stress, and I need a release. My friend says I should take up mountain biking, that it will reduce my stress (and keep me from gaining weight at this desk job). Thanks for the great site.