Adults Worldwide Eat Almost Double Daily Recommended Amount of Sodium

Mar. 21, 2013 — Seventy-five percent of the world’s population consumes nearly twice the daily recommended amount of sodium (salt), according to research presented at the American Heart Association’s Nutrition, Physical Activity and Metabolism and Cardiovascular Disease Epidemiology and Prevention 2013 Scientific Sessions.

Global sodium intake from commercially prepared food, table salt, salt and soy sauce added during cooking averaged nearly 4,000 mg a day in 2010.

The World Health Organization recommends limiting sodium to less than 2,000 mg a day and the American Heart Association recommends limiting sodium to less than 1,500 mg a day.

“This study is the first time that information about sodium intake by country, age and gender is available,” said Saman Fahimi, M.D., M.Phil., lead author and a visiting scientist in the Harvard School of Public Health’s epidemiology department in Boston, Mass. “We hope our findings will influence national governments to develop public health interventions to lower sodium.”

Cardiovascular disease is the number one cause of death in the world; excess sodium intake raises blood pressure. High blood pressure is one of the major contributors to the development of cardiovascular disease.

Among women and men, average sodium intake exceeded healthy levels in almost all countries, researchers said. Kazakhstan had the highest average intake at 6,000 mg per day, followed by Mauritius and Uzbekistan at just less than 6,000 mg per day.

Kenya and Malawi had the lowest average intake at about 2,000 mg per day. In the US, the average intake was about 3,600 mg a day.

One hundred eighty-one of 187 countries, representing 99 percent of the world’s population, exceeded the World Health Organization’s recommended sodium intake of less than 2,000 mg a day; and 119 countries, representing 88 percent of the world’s population, exceeded this recommended intake by more than 1,000 mg a day. All countries except Kenya exceeded the American Heart Association recommended sodium intake of less than 1,500 mg a day.

The researchers analyzed 247 surveys of adult sodium intake to estimate sodium intake, stratified by age, gender, region and nation between 1990 and 2010 as part of the 2010 Global Burden of Diseases Study, which is an international collaborative study by 488 scientists from 303 institutions in 50 countries around the world. .

Eating Too Much Salt Led to 2.3 Million Heart-Related Deaths Worldwide in 2010

Mar. 21, 2013 — Eating too much salt contributed to 2.3 million deaths from heart attacks, strokes and other heart-related diseases throughout the world in 2010, representing 15 percent of all deaths due to these causes, according to research presented at the American Heart Association’s Epidemiology and Prevention/Nutrition, Physical Activity and Metabolism 2013 Scientific Sessions.

The researchers analyzed 247 surveys of adult sodium intake, stratified by age, gender, region and country between 1990 and 2010 as part of the 2010 Global Burden of Diseases Study, an international collaborative study by 488 scientists from 303 institutions in 50 countries around the world.

Next, they determined how the amount of sodium people were consuming was affecting their risk of cardiovascular disease, by performing a meta-analysis of 107 randomized, prospective trials that measured how sodium affects blood pressure, and a meta-analysis of how these differences in blood pressure relate to the risk of developing cardiovascular disease compared with consuming no more than 1,000 mg per day of sodium, which the researchers defined as an optimal amount of sodium for adults. Cardiovascular disease includes all diseases of the heart and blood vessels, including stroke.

Nearly 1 million of these deaths — 40 percent of the total — were premature, occurring in people 69 years of age and younger. Sixty percent of the deaths occurred in men and 40 percent were in women. Heart attacks caused 42 percent of the deaths and strokes 41 percent. The remainder resulted from other types of cardiovascular disease. Eighty-four percent of these deaths due to eating too much sodium were in low and middle-income countries, rather than high-income countries.

“National and global public health measures, such as comprehensive sodium reduction programs, could potentially save millions of lives,” said Dariush Mozaffarian, M.D., Dr.P.H., lead author of the study and co-director of the Program in Cardiovascular Epidemiology and associate professor of medicine and epidemiology at Brigham and Women’s Hospital, Harvard Medical School and the Harvard School of Public Health.

Among the 30 largest countries in the world, those with the highest death rates (per million adults) due to over consuming sodium were:

• Ukraine — 2,109
• Russia — 1,803
• Egypt — 836

Among all countries, the three countries with the lowest death rates (per million adults) due to over consuming sodium were:

• Qatar — 73
• Kenya — 78
• United Arab Emirates — 134

The U.S. ranked 19th out of the 30 largest countries, with 429 deaths per million adults due to eating too much sodium (representing 1 in 10 US deaths due to these causes).

The American Heart Association recommends limiting sodium in your diet to no more than 1,500 mg a day, and has tips on how to reduce the amount of sodium in your diet, as well as information on six commonly consumed foods that are high in sodium.