1 Hoarseness is an abnormal change in the voice. 2  The most common cause of hoarseness is acute laryngitis.  The underlying cause of hoarseness can usually be diagnosed by a health care professional based on the patient's history and physical exam.
The effects usually stop after 3 or 4 hours. Smoking pot can increase your heart rate by as much as two times for up to 3 hours. Thatâs why some people have a heart attack right after they use marijuana. It can increase bleeding, lower blood pressure, and affect your blood sugar, too.
The Effects of Marijuana on the Body. In most cases, marijuana is rolled up into a cylindrical shape, similar to a cigarette, which is known as a âjoint.â After the user lights the joint, he/she inhales the smoke. The marijuana smoke comes into direct contact with the lungs, where it is transported into the blood stream.