Think from KERA

Why do only some drinkers become drunks?

Jan 20, 2026
Dr. Charles Knowles, a colorectal surgeon and chief academic officer at Cleveland Clinic London, dives deep into our complex relationship with alcohol. He shares his own struggles with drinking and how societal and biological factors influence alcohol use. The discussion covers the science of addiction, how early drinking can lead to dependence, and the importance of understanding our habits. Charles emphasizes the need for sustainable change, the risks of relapse, and the significance of personal reflection in recovery.
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INSIGHT

Drinking Is Mostly Automatic Choice

  • Most drinking decisions are fast, intuitive 'system one' choices, not careful calculations.
  • That makes people prone to biased justifications like "one more won't hurt."
INSIGHT

Early Drinking Raises Later Risk

  • Starting alcohol use before 14 raises later dependence risk about fourfold in humans.
  • Rodent studies show early exposure increases tolerance and reduces adverse reactions later in life.
INSIGHT

Disadvantage, Not Simple Genes

  • Higher alcohol problems in some groups aren't explained by simple genetics alone.
  • Generational disadvantage and epigenetic changes better explain population risks.
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