Does smoking marijuana increase or decrease heart rate?

Increases HR. Marijuana use increases heart rate by 20%-100%, shortly after smoking. Marijuana users have 4.8 times greater chance of heart attack in the first hour after smoking. It causes palpitations & arhythmias as well as elevation of actual heart rate. http://www.ncbi.nlm.nih.gov/pubmed/11401936.
Increases. Smoking anything increases heart rate. Holding one's breath increases heart rate. Why do you need to know this?

Related Questions

Can marijuana effect your heart rate?

Yes. Dose/amount dependent increase in heart rate. Also orthostatic hypotension due to decreases on autonomic nervous responses manifested with dizziness with position changes. Some reports of more potentially dangerous arrhythmias like atrial fibrillation are appearing now. Do not use it. Not necessary to be high. I will get high with overdoses of friendship, joy and love, self fulfillment, hard work. Read more...

2 beers and smoked a little. Heart rate was out of control. Can marijuana cause heart problems in patients with anxiety? Haven't smoked in a long time.

MJ speeds heart rate. We don't know much about effects of mj on the heart except it increases heart rate & might slightly increase blood pressure. According to this review"a large cohort study showed no association of marijuana use with cardiovascular disease hospitalization or mortality." but it should nonetheless be used with caution in those with coronary artery disease: http://www.Ncbi.Nlm.Nih.Gov/pubmed/12412838. Read more...
Toxins. Cannabis can cause tachycardia. It can cause feelings of anxiety, depression, fear, panic or in some cases euphoria. If a high dose is taken it can lead to delusions, hallucinations or losing touch with reality. Cannabis can cause serious health problems - you are taking unneccessary risks with you wellbeing. Read more...

Can withdrawal from cannabis increase your heart rate I smoked heavily for years an suddenly stopped?

Yes yes yes. There is physical withdrawal commencing 12 hrs or so from last use and associated with faster hr and higher pulse. Also, irritability do that the desire to relax at the end of the day is brought about by withdrawal. It lasts up to a few weeks. Read more...

Does smoking cause increased heart rate and lightheadedness?

Yes. These are the effects of nicotine the active ingredient in tobacco. Read more...
Yes and yes. Smoking will decrease amount of oxygen delivered to the blood stream and nicotine has similar effects to your heart as other stimulants. The best is to quit asap please. Read more...

How can I slow my heart rate down after smoking?

Dont smoke. The increase in heart rate is due to the stimulant effect of nicotine. It is harmful . I suggest you focus your efforts on smoking cessation. Read more...
Let go of nicotine. The problem may disappear if you let go of smoking. Consider attending a meeting of nicotine anonymous. Read more...

Cut down on smoking for 3 days now and now its 3a.m all day I smoked 3 cigs and my heart rate is 55 and bp 150/60 usually bp is always 110-130 is this normal just because iam sleepy? Why does only my systolic that goes up?

Lots of reasons. Smoking in China is endemic and studies show that maybe over one million Chinese will die from smoking related causes. To cut down on the smoking habit in your case will require that it is done under a physician's direction. There are several physical and psychological reasons why you experienced changes with blood pressure and heart rate. It's not easy to stop smoking and medical help is needed. Read more...
Yeah, it does that. Nicotine is similar to chemicals that run all the autonomic processes. The body gets used to huge levels of nicotine and when you don't get it, everything sort of shuts down. Heart rate decreases, vessel tone changes (increased difference between the top and lower bp number). It gets better in a week or less. Read more...

After 3 months of gym and cutting down on smoking my heart rate went from 75-80 to 55 just when taking a break and sitting down for a bit and during work its 60-70 is it normal? I also feel tired but when I smoke I dont feel tired anymore

Ans. You must have a good exercise regimen and sticking with it. Yes athletes will have a lower heart rate due to the conditioning of the body. The heart becomes more efficient and has to work less. The heart becomes able to keep up with the demands of the body efficiently. Now quit that smoking. Read more...
Nicotine Dependence. I understand your concern. Commend yourself for attending Gym and cutting down on smoking which has improved your heart rate. Heart rate during work its 60-70 is normal. Feeling tired may be due to stresses in your life causing anxiety and depression. Not feeling tired when you smoke indicates your continued dependence on smoking. See the Physician for gradual withdrawal of Nicotine, Relaxation. Read more...