Green Gold: The Untold Economic Impact of Illegal Cannabis Trade
By Katherine Pretorius
By the late 1960s, South Africa’s cannabis laws were among the world’s toughest. The 1971 Drug Act prescribed up to two years’ imprisonment for any private possession of dagga and five years for more than 115 g—penalties enforced against a backdrop of racially biased policing under apartheid. At the same time, medical research into the plant was effectively banned, and public debate was stifled by moral panic. Yet two women—one in medicine, the other in politics—began to chip away at prohibition’s foundations long before reform became fashionable.
Frances Ames: Medicine’s Maverick
From Human Rights to Healing Leaves
Frances Rix Ames (1920–2002) earned her MD from the University of Cape Town in 1964 and quickly established herself as a champion of patient welfare. As the first woman to lead neurology at Groote Schuur Hospital, she gained admiration—and sometimes fierce opposition—when she directed the landmark inquiry into Steve Biko’s death, holding influential medical colleagues accountable for ethical lapses. That same dedication to human rights guided her subsequent, less-publicised crusade: studying Cannabis sativa as a legitimate therapeutic tool. During clinical rounds, she observed how dagga extracts provided measurable relief to people living with multiple sclerosis suffering from crippling muscle spasms, and how spinal injury patients experienced genuine comfort when conventional drugs failed. Rather than dismissing these outcomes as anecdotal, Ames designed meticulous metabolic trials—measuring vital signs, neuromuscular responses, and patient feedback—to demonstrate that cannabis could be both safe and effective under controlled conditions. By advocating for research instead of repression, she risked professional censure to argue that compassion and evidence should guide medicine, not outdated prejudice.
Clinical and Metabolic Studies
In 1958, Ames published “A clinical and metabolic study of acute intoxication with Cannabis sativa,” documenting not only subjective reports of relief but also measurable changes in metabolism and neuromuscular function. At a time when dagga was classified alongside heroin, these papers reframed it as a potential therapeutic agent—language unheard of in South African medical journals.
Plea for Decriminalisation
Her 1995 editorial in the South African Medical Journal, “Cannabis sativa – a plea for decriminalisation,” argued that decades of prohibition had blocked vital research and harmed patients more than the drug itself. She warned that “timid” prejudice among peers had prevented follow‑up studies and urged the South African government to treat dagga as a public‑health issue rather than a criminal one.
Risking Reputation
Ames quietly funded small pilot trials, co‑authored follow‑up papers on cannabis‑induced euphoria, and lobbied the South African Medical and Dental Council—moves that invited professional isolation and police scrutiny. Yet she persisted, convinced that solid data would ultimately win over sceptics. Though her work stayed largely within medical circles, it laid a scientific groundwork that reformers would later cite.
Helen Suzman: Parliament’s Lone Dissenter
A Voice Against Apartheid—and Prohibition
Helen Gavronsky Suzman (1917–2009) spent 36 years (1953–1989) as the sole Progressive Party MP in South Africa’s overwhelmingly National Party–controlled parliament.
Best known for challenging apartheid laws, she did not limit her advocacy to racial justice: in 1971, when the government introduced what she called “the harshest drugs law in the world,” she was the only one to vote against it.
Challenging “Irrational Prejudice”
Suzman condemned the new dagga penalties as based on “irrational prejudice” and decried their disproportionate impact on Black South Africans, who were far more likely to be arrested under sweeping searches and draconian sentencing guidelines. She argued that punishing private users only fueled black‑market violence while leaving more harmful substances like alcohol and tobacco untouched.
Parliamentary Strategy
Using her limited speaking time, Suzman repeatedly pressed for a public‑health framework: education, treatment programs, and medical research—rather than jail cells—for non-violent users. Her speeches linked drug policy to broader human‑rights principles enshrined in the emerging post‑apartheid constitution, foreshadowing arguments later adopted by civil society litigants.
A Quiet Correspondence
Though they moved in different circles, Ames and Suzman found common ground. In June 1999, they exchanged letters—now archived by Seganoe & Waetjen—lamenting the uphill battle they faced. Ames wrote that any hint of “illegality” drove colleagues away from cannabis research; Suzman replied with wry encouragement, noting that dagga reform was “an unpopular cause” and that few politicians dared speak up. Their dialogue symbolised a bridge between clinical evidence and legislative action, uniting science and human‑rights advocacy against stigma.
From Margins to Milestone
After apartheid’s fall in 1994, dagga reform slowly gained traction—yet comprehensive change came only through the courts. In 2017, the Western Cape High Court ruled that private-use bans were unconstitutional infringements on privacy. The Constitutional Court affirmed this in September 2018, ruling in Minister of Justice and Constitutional Development v Prince that adults may “use, possess and cultivate cannabis in private”. Parliament was given 24 months to amend existing laws, resulting in the introduction of the Cannabis for Private Purposes Bill in 2024.
Lasting Impact
Though neither woman lived to see full legalisation, their early work reverberates today. Ames’s research is cited in medical cannabis guidelines, and Suzman’s speeches resonate in parliamentary debates on reparative justice for past dagga convictions. Modern campaigns—by groups like Fields of Green for All and the Dagga Couple—build on their combined legacy, blending clinical evidence with calls for social equity.
Frances Ames and Helen Suzman remind us that reform often begins at the fringes—through a single paper, a lone vote, or a pair of earnest letters. They showed that even an “unpopular cause” can gain momentum when principled voices refuse to stay silent. As South Africa charts its post-prohibition future—balancing regulation, public health, and restorative justice—it owes a debt to these two pioneers who dared to stand against the tide.
