What can cause blood clots?

My mother has been on Paxil for over 20 years. Lately, she has been getting blood clots. This is her second one, which is in the deep veins. She has smoked and drank on Paxil. It says blood clots can be a side effect. So can it cause it?

Could blood clots cause a heart attack? If so, how? My dad tends to eat food that is somewhat higher in fat and cholesteral, and doensn't exercise much (sits a lot), so I'm just wondering all this since he had a blood clot in his leg not too long ago...

My boyfriend woke up a day ago with his leg hurting. The night before he over took some muscle relaxers. He went to work the next day only to come home early, with paleness, cold feeling, and some numbness in his leg that had been hurting. He went to...

the last two days my leg has been cramping, hurting, a little burning, and tingling. It started in my calf and has now moved up to my thigh. I do not have any swelling, I don't feeling in vein or anything sticking out and my leg is not hot. I have been...

My mom is currently in the hospital for having multiple blood clots, when her doctor asked her if she has been eating any green vegetables lately which she is, they told her not too as the medicine they are giving her will slow down the process and possibly...

I have been diagnosed with Barrets Esphogus,,I am now coughing flem and last night I was upset,I got sick and started to vomit and along w/it came up 3 blood clots...I am also experiencing,fatigue,dizziness,hair loss....

I rescued a baby swan whose mother had abandoned it. I am assuming that the mother knew something was wrong and thats why she let him go. Anyways, he was at least a few months old when we found him. He was eating normal food, and he quickly became really...

In an apparently fit man age 42yrs. Non smoker, active, no recent severe infections. Could the condition have been there undetected for some time or is it more likely to have recently developed ?. Presently on warfarin but cause not known.