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High-salt diet doubles threat of cardiovascular disease in people with diabetes

Date:
July 22, 2014
Source:
The Endocrine Society
Summary:
People with Type 2 diabetes who eat a diet high in salt face twice the risk of developing cardiovascular disease as those who consume less sodium, according to a new study. Diabetes occurs when there is too much sugar in the bloodstream. People develop Type 2 diabetes when their bodies become resistant to the hormone insulin, which carries sugar from the blood to cells.

People with Type 2 diabetes who eat a diet high in salt face twice the risk of developing cardiovascular disease as those who consume less sodium, according to a new study published in the Endocrine Society's Journal of Clinical Endocrinology & Metabolism.

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Diabetes occurs when there is too much sugar in the bloodstream. People develop Type 2 diabetes when their bodies become resistant to the hormone insulin, which carries sugar from the blood to cells.

According to the U.S. Centers for Disease Control and Prevention, about 29.1 million Americans have some form of diabetes. This population is at risk for heart disease. Between 2003 and 2006, cardiovascular disease death rates were about 1.7 times higher among adults diagnosed with diabetes than those who were not, according to the CDC's 2014 National Diabetes Statistics Report.

"The study's findings provide clear scientific evidence supporting low-sodium diets to reduce the rate of heart disease among people with diabetes," said the study's first author, Chika Horikawa, RD, MSc, CDE, of the University of Niigata Prefecture in Niigata, Japan. "Although many guidelines recommend people with diabetes reduce their salt intake to lower the risk of complications, this study is among the first large longitudinal studies to demonstrate the benefits of a low-sodium diet in this population."

The nationwide cohort study surveyed participants in the Japan Diabetes Complications Study who were between the ages of 40 and 70 and had been diagnosed with diabetes. Participants were identified at 59 outpatient centers and universities across Japan. In all, 1,588 people responded to a survey about their diets, including sodium intake. The researchers reviewed data on cardiovascular complications participants experienced over the course of eight years.

Researchers divided the participants into four groups based on their sodium intake. The analysis found people who ate an average of 5.9 grams of sodium daily had double the risk of developing cardiovascular disease than those who ate, on average, 2.8 grams of sodium daily. The effects of a high-sodium diet were exacerbated by poor blood sugar control.

"To reduce the risk of developing cardiovascular disease, it is important for people who have Type 2 diabetes to improve their blood sugar control as well as watch their diet," Horikawa said. "Our findings demonstrate that restricting salt in the diet could help prevent dangerous complications from diabetes."


Story Source:

The above story is based on materials provided by The Endocrine Society. Note: Materials may be edited for content and length.


Journal Reference:

  1. Chika Horiakwa, Yukio Yoshimura, Chiemi Kamada, Shiro Tanaka, Sachiko Tanaka, Osamu Hanyu, Atsushi Araki, Hideki Ito, Akira Tanaka, Yasuo Ohashi, Yasuo Akanuma, Nobuhiro Yamada, Hirohito Sone. Dietary Sodium Intake and Incidence of Diabetes Complications in Japanese Patients with Type 2 Diabetes – Analysis of the Japan Diabetes Complications Study (JDCS). The Journal of Clinical Endocrinology & Metabolism, 2014; jc.2013-4315 DOI: 10.1210/jc.2013-4315

Cite This Page:

The Endocrine Society. "High-salt diet doubles threat of cardiovascular disease in people with diabetes." ScienceDaily. ScienceDaily, 22 July 2014. <www.sciencedaily.com/releases/2014/07/140722142511.htm>.
The Endocrine Society. (2014, July 22). High-salt diet doubles threat of cardiovascular disease in people with diabetes. ScienceDaily. Retrieved January 26, 2015 from www.sciencedaily.com/releases/2014/07/140722142511.htm
The Endocrine Society. "High-salt diet doubles threat of cardiovascular disease in people with diabetes." ScienceDaily. www.sciencedaily.com/releases/2014/07/140722142511.htm (accessed January 26, 2015).

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