Lead Exposure Elimination Project
Is there a disadvantage to removing lead from paint?
The main disadvantage is that there may be some initial investment costs for manufacturers to reformulate their paints. Lead compounds are added to paint as pigments, drying agents, and anti-corrosives, however, alternative non-lead-based ingredients are available and cost-competitive. Paints without added lead are of equivalent quality and have been on the market for decades, particularly in countries with lead paint laws (UNEP 2013). The initial investment costs for reformulation can require a temporary increase in the retail price of paint, but studies indicate that this does not reduce paint sales in the longer term (IPEN 2018).
Are lead paint laws an effective way to reduce lead exposure?
There is strong evidence that regulating the use of lead is effective in reducing lead exposure and blood lead levels at a population level. This has been seen in many countries as a trend of declining mean blood lead levels following regulation of lead sources, including gasoline and paint (Cañas et al., 2014; Health Canada, 2019; US CDC, 2019).
Legally binding control measures (lead paint laws) are the most effective way for a country to phase out lead paint because they create strong incentives for change (UNEP, 2018). Voluntary control measures have limited effectiveness because they cannot be enforced.
Which countries already have lead paint laws?
How does lead paint cause lead exposure?
Lead compounds added to paint result in high lead contents, sometimes in the order of thousands of parts per million. Among other applications, this paint is used in homes, schools, and on children’s toys. As the paint ages, it starts to crumble and flake, releasing lead into household dust. Young children ingest this lead-contaminated dust through normal hand-to-mouth behaviour. This exposure can result in elevated blood lead levels and lead poisoning (WHO, 2020).
What other sources of lead exposure are there?
Other sources of lead exposure include the recycling of lead-acid batteries, poorly controlled lead mining and smelting operations, lead-containing foods and spices, lead ceramic glazes on food containers, lead-containing aluminum cookware, lead pipes, lead-containing traditional remedies, lead-containing cosmetics, and lead-containing fishing weights and ammunition (WHO, 2019).
Almost all countries have now banned leaded gasoline, so this is no longer a significant source of exposure (UNEP, 2019). Experts suggest that lead paint is now one of the most important current and future sources of lead exposure, as well as the most tractable source to address.
Is there a safe level of lead exposure?
Studies so far have not identified any blood lead level that is safe. In fact, the relationship between lead exposure and neurotoxic effects is stronger at lower blood lead levels (Lanphear et al., 2005).
What are the health impacts of lead exposure?
Lead exposure, even at low levels, damages multiple body systems (NTP, 2012; USEPA, 2013). In children, lead exposure adversely affects the developing brain, causing reduced intelligence, lower educational attainment, reduced attention span, and behavioural disorders (Lanphear et al., 2005; Mazumdar et al., 2011; Reuben et al., 2017). In adults, lead exposure is associated with renal disease and cardiovascular disease, including hypertension and coronary artery disease (Chowdhury et al, 2018; Lanphear et al., 2018). The Institute for Health Metrics and Evaluation estimated that in 2017 lead exposure was responsible for 1.06 million deaths and 21.7 million DALYs per year (IHME, 2020). This accounts for 1% of the global burden of disease.
What are the socioeconomic impacts of lead exposure?
The impact of lead exposure on cognitive development and IQ significantly reduces the individual’s lifetime earnings and economic productivity. In 2011, the annual economic losses from childhood lead exposure in low and middle-income countries were estimated to be $977 billion (Attina & Trasande 2013). In many lower-income countries the economic costs are estimated to be as much as 5-8% of GDP, indicating that lead exposure can be a significant barrier to economic development and poverty reduction.
Additional socioeconomic costs result from the increase in crime and violence associated with lead exposure. Childhood lead exposure appears to be a highly significant causal factor in violent crime, and lead exposure reduction correlates strongly with national-level crime reduction (Needleman, 1996; Nevin, 2007; Stretesky and Lynch, 2001). Further costs result from the healthcare needs and treatment of lead poisoning and associated cardiovascular and renal disease (Gould, 2009; Pichery et al, 2011).
How cost-effective is Lead Exposure Elimination Project?
This is one of the key uncertainties about LEEP. As we are currently in the early stages of the organisation, cost-effectiveness is very difficult to estimate.
Our preliminary estimates take into account the harms to health and income averted by the introduction of lead paint laws in one country, as well as the likelihood of success, expected level of enforcement, costs of our work, and costs of government regulation. We also take into account counterfactual impact, so only include the impact of averting additional lead paint exposure for the number of years by which we expect to bring forward the introduction of lead paint laws.
Overall, we currently estimate that our cost-effectiveness is in the region of the most cost-effective organisations working in global health and development. However, we are very uncertain about this. We expect to estimate our cost-effectiveness more concretely in the future.
Current main areas of uncertainty are:
- Our country of implementation
- The proportion of lead exposure that is from lead paint
- Annual additional lead paint use
- The number of years we would bring policy change forward by
- The number of years of impact from averted additional lead paint
- Compliance to new lead paint laws
- Government costs of regulation and enforcement
Our internal modeling will be shared shortly.
I have another question not discussed here, or would like more information.
Feel free to contact us. The LEEP team is happy to answer any questions you might have.