Protein risk for millions from rising CO2 emissions – study

Last update 16:20 | 04/08/2017

About 150 million people risk a significant loss of protein if carbon dioxide emissions continue to rise, leaving children in the worst-affected countries more vulnerable to death and disease, according to new research.

Today, 76 percent of the world’s population gets most of its protein from plants, but higher CO2 emissions will reduce the amount of protein – as well as iron and zinc – in a range of staple crops, said researchers at the Harvard T.H. Chan School of Public Health.

Eighteen countries, including India, may lose more than 5 percent of their dietary protein by 2050 as a result of crops such as rice, wheat and barley losing their nutritional value.

Lack of protein contributes to children being underweight and short, and leaves them more open to disease and death.

“Thought must be given to reducing vulnerability … through supporting more diverse and nutritious diets, enriching the nutritional content of staple crops, and breeding crops less sensitive to these CO2 effects,” said senior research scientist Samuel Myers.

“And, of course, we need to dramatically reduce global CO2 emissions as quickly as possible,” added Myers, who is co-author of the paper, which was published on Wednesday in Environmental Health Perspectives, a monthly peer-reviewed journal.

The effects of CO2 on protein levels are less pronounced in maize, sorghum and beans, the authors said.

High CO2 levels in the atmosphere are also likely to cut the amount of iron in plants, Harvard researchers said in a companion study published in GeoHealth scientific journal.

Those most vulnerable to a loss of iron in their staple crops include 354 million children under five and more than 1 billion women of childbearing age, mainly in South Asia and north Africa, the researchers said.

They live in countries already experiencing high rates of anaemia and whose crops are expected to lose more than 3.8 percent of dietary iron as a result of the CO2 effect.

Lack of iron affects people’s ability to work, and leads to higher death rates during pregnancy and childbirth, and increased health risks for children.

“Because these changes will be gradual and largely imperceptible, it will require ongoing monitoring of the nutrient content of their crops … to evaluate when and how to most effectively intervene if necessary,” the researchers said.

Source: Reuters

This entry was posted in CO2 emission, Môi trường - Environment and tagged , , , by Trần Đình Hoành. Bookmark the permalink.

About Trần Đình Hoành

I am an attorney in the Washington DC area, with a Doctor of Law in the US, attended the master program at the National School of Administration of Việt Nam, and graduated from Sài Gòn University Law School. I aso studied philosophy at the School of Letters in Sài Gòn. I have worked as an anti-trust attorney for Federal Trade Commission and a litigator for a fortune-100 telecom company in Washington DC. I have taught law courses for legal professionals in Việt Nam and still counsel VN government agencies on legal matters. I have founded and managed businesses for me and my family, both law and non-law. I have published many articles on national newspapers and radio stations in Việt Nam. In 1989 I was one of the founding members of US-VN Trade Council, working to re-establish US-VN relationship. Since the early 90's, I have established and managed VNFORUM and VNBIZ forum on VN-related matters; these forums are the subject of a PhD thesis by Dr. Caroline Valverde at UC-Berkeley and her book Transnationalizing Viet Nam. I translate poetry and my translation of "A Request at Đồng Lộc Cemetery" is now engraved on a stone memorial at Đồng Lộc National Shrine in VN. I study and teach the Bible and Buddhism. In 2009 I founded and still manage on positive thinking and two other blogs on Buddhism. In 2015 a group of friends and I founded website CVD - Conversations on Vietnam Development ( I study the art of leadership with many friends who are religious, business and government leaders from many countries. In October 2011 Phu Nu Publishing House in Hanoi published my book "Positive Thinking to Change Your Life", in Vietnamese (TƯ DUY TÍCH CỰC Thay Đổi Cuộc Sống). In December 2013 Phu Nu Publishing House published my book "10 Core Values for Success". I practice Jiu Jitsu and Tai Chi for health, and play guitar as a hobby, usually accompanying my wife Trần Lê Túy Phượng, aka singer Linh Phượng.

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