What lead did to Zamfara and its people
By Dr. Abdulkadir Lawan
A putatively held belief is that the banditry and crime in the Zamfara region of Nigeria cannot be unconnected to the politics of gold and other natural resources mining. But something deadlier than politics, a stealthy by-product of crude extraction methods at the core of gold mining, might have played a leading role in the increase in crime we are witnessing today in the region.
In the early 2000s, possibly due to the recent change in rule from a military to a democratic one, a renewed gold interest in Zamfara resulted in a mini gold rush. Women and men in the villages would dig out rock ore and extract the gold through crushing and grinding; the resulting dust was contaminated with lead. Some even brought this newfound work to their homes, contaminating their food, water, clothes, and, most dangerously, children. What followed in child deaths from lead poisoning created an unintended raucous through polio vaccination outreach and ended up inviting several efforts to clean up the areas and treat the surviving children.
It is well known that lead is dangerous, even in small doses. It mimics calcium in the body and can be stored in bones, continuing to poison the body even years after initial exposure. The brain is the most sensitive organ to lead. It basically blocks the release of neurotransmitters, which causes headaches and memory loss, and children are especially susceptible. There is no doubt among scientists that lead exposure can cause permanent learning disorders and behavioural problems.
Studies on baby teeth showed that even lead exposure well below the “safe” level results in delayed learning, decreased IQ and increased behavioural problems. There was a direct correlation between lead in children and the inability to graduate from high school in the US. While the CDC has since lowered the acceptable levels of lead in children’s blood from 60ug/dL to 3.5ug/dL over the years, there is no safe lead level as far as it is known today.
Globally, about 65% of all unexplained intellectual disability are believed to be caused by lead. Many countries have monitored the levels of lead exposure in their children over time. In Nigeria, we have little to no data nationwide. A particular US data, however, shows troubling correlations.
Violent crimes steadily rose from the 1970s to the 1990s before abruptly declining. The troubling part? A graph of average preschool blood lead levels looked strikingly similar to crime levels roughly twenty years apart. The question was whether kids exposed to higher levels of lead grew up to commit more crimes.
The same pattern appears in Britain, Canada, and Australia. In another study, the lead concentrations in the blood of those arrested for violent and anti-social behaviour could not have been more correlated with their behaviour. This shows that lead is at least very likely responsible for some of the increase in crime.
Whatever the reason for the resurgence of artisanal gold mining in Zamfara in the early 2000s, children raised in that period were in their early teens and 20s when the country began to witness an upsurge in bandit activities at the start of 2010. Thankfully, considerable clean-up efforts and community sensitisation mean there is an unlikely recurrence of lead poisoning effects on this scale around the region. A decline in violent activities can only then be hoped for.
Glissading along the same line, the biggest source of lead pollution worldwide was the tetraethyl lead compound that was added to gasoline to make leaded fuel. Nigeria completely phased out leaded gasoline in 2004, as did all other countries between 1986 (Japan) and 2021 (Algeria). Nigeria witnessed a record period of civil violence from the 1970s until about the early 2000s. The current crop of our, in my opinion, clearly cognitive-declined politicians was the most exposed to vehicular lead poisoning in the same generation as the perpetrators of multiple violent religious and ethnic crises.
The dangers of lead had already been known for hundreds of years. In 1786, Benjamin Franklin remarked that lead had been used for far too long considering its known toxicity – “This, my dear friend, is all I can at present recollect on the subject. You will see by it that the opinion of this mischievous effect from lead is at least above sixty years old. And you will observe with concern how long a useful truth may be known and exist before it is generally received and practised on.”
Scientists decided to add lead to fuel one hundred and fifty years later (i.e., after Benjamin Franklin’s speech). Almost one hundred years after that, the juveniles among our (Nigerian) citizenry were exposed to lead, leaving a nation to wonder why there is so much crime in our time.
Dr. Abdulkadir Lawan wrote via abdullwn@gmail.com.
