In a research done by scientists at the Federal University of
Sao Paulo in Brazil, adults who started smoking pot before they
were fifteen years old exhibited serious brain problems. Their
attention span, impulse control, and their ability to plan and
execute tasks have been affected with the early onset of pot
addiction in their lives. Those who take marijuana later on in
life were less vulnerable to such irreparable damages to the
brain. In a feature on CBS News, Dr. Maria Alice Fontes shares
“We found that early-onset, but not late-onset, chronic cannabis
users had deficits in their cognitive functioning. Adolescence
is a period in which the brain appears to be particularly
vulnerable to the neurotoxic effects of cannabis. The brain
before the age of 15 is still developing and maturing, so
exposure to cannabis during this period may be more harmful.”
What researchers in Brazil found out was also supported by Dr.
Karen Bolla from the Johns Hopkins Bayview Medical Center. She
co-authored the study and confir