Legal scholars noted the significance of the personal disclosure. Luciana Boiteux, a criminal law professor at the Federal University of Rio de Janeiro, told reporters that Mendes' statement could signal a shift in how the Court approaches pending drug decriminalization cases. "When a justice speaks this openly about his own experience with cannabis, it humanizes the debate and challenges the stigma that has dominated our drug policy for decades," she said.

The Supreme Court is currently considering a case that could decriminalize possession of small quantities of marijuana for personal use. The deliberations have stretched over several years, with justices divided on whether drug possession should remain a criminal offense or be treated as an administrative violation.

Mendes' comments also come as Brazil grapples with record violence in several states. In Espírito Santo, police officers were recently arrested for allegedly seizing drugs and reselling them to traffickers, highlighting the corruption that prohibition can generate within law enforcement institutions. In São Paulo and Rio, powerful criminal organizations like the Primeiro Comando da Capital (PCC) and Comando Vermelho have built billion-dollar enterprises around cocaine and marijuana trafficking.

Conservative politicians and prosecutors criticized Mendes' remarks. Senator Sergio Moro, the former anti-corruption judge who served as justice minister, questioned whether a sitting Supreme Court justice should publicly advocate policy positions on cases the Court may decide. "Justices should maintain impartiality on issues that will come before them," Moro said in a statement.

But progressive legislators and public health advocates welcomed the comments. Federal Deputy Talíria Petrone of Rio's favela communities called Mendes' statement "courageous" and noted that prohibition policies have disproportionately harmed Black and poor Brazilians. "Young Black men in the favelas are imprisoned or killed for possessing drugs, while middle-class users face few consequences," she said. "This selective enforcement reveals the racism embedded in our drug war."

The economic costs of prohibition are also mounting. Brazil spends billions annually on law enforcement, prisons, and judicial proceedings related to drugs, while tax revenue from a regulated market could fund education and healthcare programs. Several Latin American countries, including Uruguay, Colombia, and Mexico, have moved toward decriminalization or regulated markets in recent years.

International drug policy experts noted that Brazil's potential shift could influence regional approaches. Juan Carlos Garzón, a researcher at the Ideas for Peace Foundation in Bogotá, suggested that if Brazil decriminalizes marijuana possession, other Latin American nations may feel emboldened to pursue similar reforms. "Brazil's size and regional influence mean its drug policies carry weight across the continent," he said.

Mendes has served on the Supreme Court since 2002 and has built a reputation as an unpredictable justice willing to challenge political orthodoxies. His previous rulings have recognized same-sex marriage rights and affirmed indigenous land protections, though he has also faced criticism for allegedly close ties to political figures.

The personal revelation about cannabis use is unprecedented in Brazilian judicial history. While some politicians have acknowledged past marijuana use, no sitting Supreme Court justice had previously disclosed drug consumption while advocating for policy reform. The move appears calculated to shift public discourse by demonstrating that responsible adults, including high-ranking officials, can use cannabis without social harm.

Public opinion on drug policy in Brazil has been shifting gradually, particularly among younger voters. Recent surveys show growing support for marijuana decriminalization in major cities, though rural and evangelical communities remain strongly opposed. President Luiz Inácio Lula da Silva has not taken a clear position on drug policy reform, focusing instead on social programs and economic development.

The Supreme Court's eventual ruling on drug decriminalization could affect millions of Brazilians. Advocates estimate that tens of thousands of people are arrested annually for marijuana possession, clogging courts and prisons with non-violent offenders. A ruling favoring decriminalization would not legalize drug sales but would eliminate criminal penalties for possession of small quantities.

As Brazil debates its approach to drugs, Mendes' intervention has ensured the conversation extends beyond security concerns to encompass public health, human rights, and social justice dimensions. Whether his colleagues on the Supreme Court will follow his lead toward reform remains uncertain, but his willingness to speak openly has already altered the terms of the debate.

The disclosure also raises questions about how Brazil balances traditional morality concerns, particularly from influential evangelical constituencies, with evolving scientific understanding of drug policy effectiveness. In a country where religious conservatism increasingly shapes political discourse, Mendes' defense of harm reduction over prohibition represents a direct challenge to the punitive approach that has dominated for decades.