Report: Pot smoking not tied to middle-age mental decline
QMI Agency files
Middle-aged adults whose memories have grown hazy can’t blame occasional pot smoking or other light illicit drug use for their forgetfulness, according to a British study, although experts warn heavy, prolonged use could harm mental functions.
The study, carried in the Americanjournalofepidemiology, tested the mental function and memory of nearly 9,000 Britons at age 50 and found that those who had used illegal drugs as recently as in their 40s did just as well, or slightly better, on the tests than peers who had never used drugs.
Marijuana was by far the most common indulgence for the participants — who were surveyed at age 42 about current or past drug use, then tested at age 50 — with 6% saying they had used it in the past year, while one-quarter said they had ever used it.
Other drugs they were asked about included amphetamines, LSD, hallucinogenic mushrooms, cocaine and ecstasy — with anywhere from 3% to 8% of study participants saying they’d ever used those drugs.
“Overall, at the population level, the results seem to suggest that past or even current illicit drug use is not necessarily associated with i mpaired cognitive functioning in early middle age,” said lead researcher Alex Dregan, of King’s College London.
“However, our results do not exclude possible harmful effects in some individuals who may be heavily exposed to drugs over longer periods of time.”
Dregan’s team used data on 8,992 42-year-olds participating in a U.K. national health study, who were asked if they had ever used any of 12 illegal drugs. Then, at the age of 50, they took standard tests of memory, attention and other cognitive abilities.
Overall, there was no evidence that current or past drug users had poorer mental performance. In fact, when current and past users were lumped together, their test scores tended to be higher.
But that advantage was small, the researchers said, and might just reflect another finding — that people who’d ever used drugs generally had a higher education level than non-users.
“In a Western population of occasional drug users, this is what you’d expect to see,” said John Halpern, a psychiatrist at Harvard Medical School and Mclean Hospital in Belmont, Mass., who has studied the potential cognitive effects of drug use. “In some ways, this is not surprising. The brain is resilient.”
Though some studies have found that drugs like marijuana and cocaine may cloud thinking, memory and attention in the short term, the current findings support the notion that those effects may be temporary, Dregan’s team said.
Halpern noted that work focusing on people who have smoked pot regularly for years showed that once they stop the drugs, their deficits on cognitive tests improve after a month.
Still, he said this should not be taken as an endorsement of drug use, noting that the current study did not rule out the possibility of lasting negative cognitive effects from heavy, prolonged drug use.
Medtronic Inc. says it has received U.S. regulatory approval for the first remote glucose monitor that will let parents check the blood sugar of a diabetic child sleeping in another room.
About three out of four severe hypoglycemic reactions, in which a diabetic’s blood sugar drops to a dangerously low level, occur overnight. Parents of children with diabetes typically get up several times a night to check whether the child’s blood sugar is within healthy levels.
The bedside monitor, now approved by the Food and Drug Administration, has an alarm that alerts the caregiver to blood glucose changes, protecting against low blood sugar episodes that can lead to seizures or even coma or death. Parents and other caregivers can see a child’s or adult’s glucose trends and insulin pump information on the device, called the mysentry Remote Glucose Monitor, and can take action to prevent a further decline in blood sugar if needed, or remain in bed if all is well.
— Reuters