#Addiction

A wave of recent studies is drawing global attention to a striking trend: the tetrahydrocannabinol (THC) content in cannabis – the primary compound responsible for the drug’s psychoactive “high” – is now far more potent than in previous decades. According to new data reported by Axios, the average THC level in U.S. cannabis has quadrupled since the 1990s, signaling both significant changes for cannabis users and new health concerns for society at large Axios. For Thai readers—whether policymakers, healthcare providers, students, or parents—the global surge in high-potency cannabis raises important questions about public health, legal approaches, and cultural attitudes toward marijuana.

New data shows that cannabis today is far more potent than in the 1990s. The average THC level in cannabis has quadrupled over the past few decades, raising concerns about health risks and how societies regulate the drug. For Thai policymakers, healthcare professionals, students, and parents, this global trend prompts questions about public health, law, and cultural attitudes toward cannabis.

In the 1990s, cannabis with around 5% THC was among the strongest options available. By 2025, many cannabis products—flowers, concentrates, and edibles—often contain 20–30% THC, with some extracts even higher. The rise is driven by advanced cultivation, selective breeding, and growing demand for stronger effects. This escalation comes with increased potential for adverse effects, particularly for new users and young people.