So, a friend of mine discovered cocaine at the beginning of this year. To date, he has done about four grams, buying a gram or so every couple of weeks. Now, I don't have any experience with this stuff, myself, so my question to you is whether or not cocaine use at this level (a gram every couple weeks) could cause any serious physical or mental problems, addiction aside. The reason I'm worried is that I have heard many a time that cocaine has the ability to cause brain damage. I've also heard that it can cause problems with the cardiovascular system, perhaps eventually triggering a heart attack. I don't want to push into his business, as I have my own bad habits, and I understand the way things are. But I just wanted to make a general inquiry to those who may know. Will this usage, assuming it stays the way it is, cause any noticeable brain damange? Will it create a questionable condition for his heart? Hell, is it going to destroy his nose, eventually? I'm a little concerned. That's all. So any information would be appreciated.