I was really interested in doing research on human sexuality and there are very few programs in the country, but Johns Hopkins, where I went for my masters degree, had a reproductive health program in their School of Public Health

While not life threatening, these effects can have long lasting consequences: Impaired Short-Term Memory and Learning: Marijuana use, especially in the short term, impairs short-term memory, attention, and learning, making it harder to retain new information and perform complex tasks Paranoia and Psychosis: High doses can trigger paranoia and acute psychotic episodes, and may worsen symptoms in people with existing mental health conditions Cognitive Impairment and Lower IQ: Long-term or heavy use, particularly when started in adolescence, is associated with lasting cognitive deficits and lower IQ scores Increased Risk of Heart Attack or Stroke: Frequent cannabis smoking may significantly increase a persons risk for heart attack and stroke, according to an observational study supported by the National Institutes of Health

Source: Image from Cancer Research UK Quitting smoking can reverse the damage caused by smoking Often, people who have smoked for many years believe that theres no point in quitting because the damage has been done
It also requires steady hands and patience, which makes it impractical in many situations