[atlbuds]

Originally Posted by dfoolz

In other studies, smoked marijuana has been shown to cause a variety of health problems, including cancer, respiratory problems, increased heart rate, loss of motor skills, and increased heart rate. Furthermore, marijuana can affect the immune system by impairing the ability of T-cells to fight off infections, demonstrating that marijuana can do more harm than good in people with already compromised immune systems.9

why did they say increased heart rate twice?

Because they couldn't come up with another lie to fill up space.