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.
1 Marijuana use affects dopamine; a neurotransmitter involved in the brain's pleasure producing or reward mechanism, which helps explain its potential for dependency. 2  Memory impairment. 3  Marijuana use can negatively affect short-term memory, especially memories formed while a person was high. 4  Heart and lungs.