Do diet teas and meal-substitute shakes work to lose weight?

I've been trying to diet for over two years. My goal is to lose about 25 pounds, but the most I've been able to get is 15, and I can hardly keep it off. I concentrate on eating very little and since exercise is so hard to keep up, I pretty much starve myself to death. I manage to maintain the weight for a month, and then I lose control again. I've been thinking about the various diet products in the market, such as diet teas, herbs, meal- substitution shakes, and other medical products. I'd like to know what kind of side-effects they have, and how effective they are. (Some boast a seven-day plan, but that seems hardly believable.) Also, I'd like to know how well-researched the information is on these products (i.e., are they long-term enough to cover all the side-effects?) As for aspartame, is it really harmless, or is it just not researched yet?


What can I do if I have no privacy to masturbate?

I used to always masturbate at least once a day before I came here to college. However, now that I have a roommate, I can never find time alone to masturbate. I feel a need to masturbate at least once a day, but now I can't go through with my urge every day. Thus I start thinking about masturbation during class, and it's really affecting my mind. I need to masturbate or else I can't function correctly. Please help me out. Maybe there is another means to get out my sexual urges.