BasicIncMag

INSERT 6 Learning to Drink

Study finds alcohol changes the brain from the very first drink

“ Drugs of abuse basically hijack the normal learning and memory processes. ” - Dr. Dorit Ron University of California - San Francisco

Preventing escalation

The NIAAA-funded study did not establish a relationship between initial use and addiction, or even problematic drinking. But the hope is that further understanding of how alcohol affects the brain initially could lead to better treatment and prevention efforts down the road. “If we can control that step, we may be able to prevent further escalation,” Dr. Ron says. More research is needed to determine which other components of the brain are affected by initial alcohol exposure. Dr. Ron says she believes the changes that occur during first exposure could be reversed with prolonged abstinence from alcohol. But she said the more a person drinks, the harder it is to reverse those changes as the brain forms stronger connections to drinking.

One drink is all it takes. That’s what one research team found when studying how even the first exposure to alcohol can affect a person’s brain. A team from the University of California - San Francisco exposed mice to alcohol and then studied the synapses (connections) in their brains.The team found that even the first drink produced significant changes in the brain’s biological structure, calling the changes a “learning event.” “This is basically the first step,” says Dr. Dorit Ron, one of the chief researchers. “You are basically placing a memory trace.” Dr. Ron says the entire study was based on the idea that “addiction, and not just alcohol addiction, is thought to be a maladaptive form of learning and memory.” In essence, the study showed that first exposure to alcohol primes the brain for further use and lays the foundation for future “learning.” “Drugs of abuse basically hijack the normal learning and memory processes,” Dr. Ron says. “The behavior becomes habit.”

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