Several negative psychological effects that weed can cause are anxiety, depression, panic, and paranoia. Studies have proven that long term use of cannabis or marijuana destroys dopamine. Dopamine helps tell the brain when something exciting is about to happen. This is why when some people are “high” they are serene and lose sense of urgency or feelings. One effect that marijuana has on most users is that it causes increased heart rate. A normal person 's heart rate is seventy to eighty beats per minute, when someone uses marijuana their heart rate increases between twenty and fifty more beats per minute. In some cases it has been proven that users heart rates have even doubled. When a persons’ heart rate increases the rest of their body has to work that much harder to keep up with the increased rate. This faster rate puts people at a much greater risk for heart attacks. In addition, experimenting with weed can lead to damage in one’s brain. There are also negative immediate effects due to this drug. These immediate effects could include disruption of thinking ability, disruption to tasks involving movement or muscular activity, or even affecting memory. Marijuana can slow down its users learning process. Research has shown that cannabis users recalled significantly fewer location-action combinations than non-users in a video based prospective memory task experiment. Research shows that cannabis has a detrimental effect on prospective memory ability
Several negative psychological effects that weed can cause are anxiety, depression, panic, and paranoia. Studies have proven that long term use of cannabis or marijuana destroys dopamine. Dopamine helps tell the brain when something exciting is about to happen. This is why when some people are “high” they are serene and lose sense of urgency or feelings. One effect that marijuana has on most users is that it causes increased heart rate. A normal person 's heart rate is seventy to eighty beats per minute, when someone uses marijuana their heart rate increases between twenty and fifty more beats per minute. In some cases it has been proven that users heart rates have even doubled. When a persons’ heart rate increases the rest of their body has to work that much harder to keep up with the increased rate. This faster rate puts people at a much greater risk for heart attacks. In addition, experimenting with weed can lead to damage in one’s brain. There are also negative immediate effects due to this drug. These immediate effects could include disruption of thinking ability, disruption to tasks involving movement or muscular activity, or even affecting memory. Marijuana can slow down its users learning process. Research has shown that cannabis users recalled significantly fewer location-action combinations than non-users in a video based prospective memory task experiment. Research shows that cannabis has a detrimental effect on prospective memory ability