Cognitive Functioning

“People who consume cannabis containing only THC, have trouble with memory, attention span, and concentration,” Dr. Cyr said. However, the good news is that after around 30 days of abstinence, most of these symptoms gradually go away. But Dr. Cyr warned that problems with attention may persist for longer.


This is a controversial issue according to Dr. Cyr.

He said that some scientists and doctors believe that while under the influence of cannabis complex tasks might become more difficult to perform since it has an impact on executive functioning. “So [cannabis users] might stop doing complicated things like studying for example because it requires too much mental effort,” he told Dr. Joe.


Cannabis is a very popular sleep aid. However, does it produce restful sleep? Dr. Cyr says it depends. According to some, it does, but there hasn’t been a lot of studies. Dr. Cyr also added that “CBD may cause insomnia.”

For his patients, if they haven’t responded to any other medication, he would prescribe synthetic THC. In some of his patients, it finally permitted them to sleep. But Dr. Cyr only prescribes cannabis as a form of last line of defence.

Some doctors argue that cannabis is safer than other sleep-aids like valium and that they rather prescribe it as a first line of defence for people suffering from insomnia.

. . . . .

There is so much more to be discovered about cannabis, whether about its positive or negative effects. And according to Dr. Cyr, we’re at the very beginning. With the end of prohibition in Canada, doors for researchers have been wide opened. So for now, we’ll have to wait, and perhaps we might have to wait awhile.

“We’ll talk in 5 to 10 years,” Dr. Cyr told Dr. Joe.

And we’ll be listening.