this obviously needs further study, but the feds will not allow studies
NEW YORK (AP) — Teens who routinely smoke marijuana risk a long-term drop in their IQ, a new study suggests.
The researchers didn't find the same IQ dip for people who became frequent users of pot after 18. Although experts said the new findings are not definitive, they do fit in with earlier signs that the drug is especially harmful to the developing brain.
"Parents should understand that their adolescents are particularly vulnerable,'" said lead researcherMadeline Meier of Duke University.
Study participants from New Zealand were tested for IQ at age 13, likely before any significant marijuana use, and again at age 38. The mental decline between those two ages was seen only in those who started regularly smoking pot before age 18.
http://news.yahoo.com/teen-pot-linked-later-declines-iq-192328332.html
NEW YORK (AP) — Teens who routinely smoke marijuana risk a long-term drop in their IQ, a new study suggests.
The researchers didn't find the same IQ dip for people who became frequent users of pot after 18. Although experts said the new findings are not definitive, they do fit in with earlier signs that the drug is especially harmful to the developing brain.
"Parents should understand that their adolescents are particularly vulnerable,'" said lead researcherMadeline Meier of Duke University.
Study participants from New Zealand were tested for IQ at age 13, likely before any significant marijuana use, and again at age 38. The mental decline between those two ages was seen only in those who started regularly smoking pot before age 18.
http://news.yahoo.com/teen-pot-linked-later-declines-iq-192328332.html