New York City — Preparing a meal is one of the most dangerous things to do in the developing world. Millions of people cook on open fires, which lead to health and safety problems. Toxic cooking smoke claims 1.9 million lives each year. Cookstove smoke contributes to a range of chronic illnesses and acute health impacts such as early childhood pneumonia, emphysema, cataracts, lung cancer, bronchitis, cardiovascular disease, low birth weight, and burns. The World Health Organization estimates that harmful cookstove smoke is the fifth leading cause of death in poor developing countries.
Yet, a scalable, clean solution may be on the horizon according to Sumi Mehta, Senior Technical Manager of the Global Alliance for Clean Cookstoves. Exciting new developments may put the clean cook stove sector within reach of a “tipping point":
• Novel clean cookstove design, testing, and monitoring
• New research on the health and environmental benefits of clean cooking stoves and fuels
• Growth of a number of business models in the field
• The launch of national cookstove programs in key countries in Asia, Africa, and Latin America
• The need to address climate change and the potential for carbon finance to fund stove initiatives
During a June 19 luncheon sponsored by the United Nation's Foundation (UNF), Mehta spelled out the challenges of unsafe cooking and viable solutions. The presentation was part of 'We Can, We Should, We Will Conquer Cancer' — a three-day event hosted by the American Cancer Society. Mehta answered several questions posed by dozens of journalists participating in the forum:
What is the health and human toll of cookstoves?
Exposure to smoke from traditional cookstoves and open fires – the primary means of cooking and heating for nearly three billion people in the developing world – causes nearly 2 million premature deaths annually, with women and young children the most affected. Cookstove smoke contributes to a range of chronic illnesses and acute health impacts such as early childhood pneumonia, emphysema, cataracts, lung cancer, bronchitis, cardiovascular disease, low birth weight, and burns. The World Health Organization estimates that harmful cookstove smoke is the fifth leading cause of death in poor developing countries. Reliance on biomass for cooking and heating forces women and children to spend many hours each week collecting fuel.
Cookstove smoke has drawn little public attention. Why so?
Exposure to cookstove smoke has historically received limited funding and research attention when compared to other risk factors (lack of clean water, sanitation, and hygiene) or diseases (malaria or tuberculosis) that lead to similar levels of mortality. Part of the reason for this lack of investment is structural – barriers such as a basic lack of awareness among both affected populations and the donor community about the impact of harmful cookstove smoke and the corresponding benefits of clean cookstoves, the lack of affordable, advanced solutions that met users’ needs, or the lack of research to effectively quantify the health and environmental benefits of improved stoves and fuels. These include a lack of rigor in setting basic performance benchmarks, limited testing of stoves in both the lab and the field, and limited monitoring and evaluation of results. Ineffective and unsustainable dissemination models have also failed, including approaches such as short-term subsidies or stove giveaways not tied to the development of a sustainable market for cleaner cookstoves.
You have covered the challenges of cookstoves. Let's talk about solutions. What are they?
The use of clean and efficient stoves and fuels can reduce exposure to harmful cookstove smoke. Typical cookstoves in developing country markets usually cost from a few dollars to $100, with the higher-performing stoves (90% reduction in emissions) generally costing more than those that provide important, but lesser benefits (40-50% reduction in emissions). Recent scientific evidence indicates that the greater the emissions reductions, the greater the health benefits. However, all solutions that significantly reduce human exposures will help lower the risk of many acute and chronic illnesses, especially for women and children who are most often exposed to cookstove smoke.
More efficient solutions also reduce fuel consumption and the time that people – usually women and girls – spend collecting fuel, allowing more time for income-generating, educational, and other activities. In cases where fuel is purchased, the cost of an efficient cookstove can often be recovered through fuel savings within a few months. Cleaner stoves that last for several years also allow the accumulated fuel savings to be spent on a range of livelihood- enhancing activities, such as starting a business, purchasing needed medicines, and paying school fees for children.
The reductions in emissions achieved by clean cookstoves can also create revenues from carbon credits. Stove companies can use this revenue in many ways, for example to reduce the stove price (thus making these products more affordable to poorer consumers), to expand marketing efforts, or to develop new products or expand into new markets. The entire supply chain for clean stoves and fuels – design, manufacture/production, distribution, and after-sales services – can also be a source of job creation at the local level.
Other steps, such as installing a chimney, opening windows, and keeping children away from cooking fires, can also help reduce direct exposure to smoke, but they do little to mitigate the other many air quality, livelihood, forestry, or climate impacts of traditional cookstoves. The development of a thriving global clean cookstove industry that is constantly innovating to improve design and performance, while lowering the cost of stoves and fuels, is therefore seen as the most sustainable way to tackle this issue.
This thriving global market will need to be based on high-quality, proven products – both stoves and fuels. To meet and sustain a global scale of production and distribution to the full target market will eventually require a fully commercial platform. As this industry develops over the coming years, commercial solutions will be a critical, but by no means the only, dissemination model of Alliance partners. Well-designed government efforts have demonstrated an ability to reach large populations and are critical components to reach the very poor in particular. Likewise, humanitarian settings offer a special case where purely commercial solutions are not always realistic.
What is the Global Alliance for Clean Cookstoves?
The Global Alliance for Clean Cookstoves is a new public-private initiative led by the United Nations Foundation to save lives, improve livelihoods, empower women, and combat climate change by creating a thriving global market for clean and efficient household cooking solutions. The Alliance’s 100 by ’20 goal calls for the Alliance to enable 100 million homes to adopt clean and efficient stoves and fuels by 2020, toward a long-term vision of universal adoption of clean and efficient cooking solutions. The Alliance will work in cooperation with other leading non- profit organizations, foundations, academic institutions, corporate leaders, governments, and UN agencies to help overcome the market barriers that currently impede the production, deployment, and use of clean cookstoves in the developing world.
Sumi Mehta, MPH, PhD is the Senior Technical Manager for the Global Alliance for Clean Cookstoves, an initiative of the UN Foundation. Until recently, she was the scientific lead for the Health Effects Institute’s Public Health and Air Pollution in Asia Program. She has worked on assessing exposures to household air pollution (HAP), and evaluating the cost-effectiveness of interventions to promote environmental health. She co-authored chapters on exposure assessment and susceptibility in the latest WHO Global Air Quality Guidelines, and is a member of the WHO Expert Group for HAP Guidelines. She collaborated with Kirk Smith to produce the first estimates of the global burden of disease from HAP, and is actively involved in updating the burden estimates for HAP and outdoor air pollution.
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