South Korea's health authorities said Monday that high blood pressure and diabetes are among the most common diseases affecting South Korean adults.

The Korea Centers for Disease Control and Prevention (KCDC) said one out of every four people aged 30 or older suffered from high blood pressure as of last year, while one out of every 10 people had diabetes.

The findings are based on a survey of 3,840 households across the country in 2012, according to the KCDC.

Diseases caused by high blood pressure and diabetes account for several of the leading causes of death in South Korea in 2011, according to the KCDC.

High blood pressure can lead to heart attack, stroke and other serious health problems, according to the World Health Organization.

The KCDC said 43.7 percent of men and 7.9 percent of women surveyed smoked. It also said 23.7 percent of men and 31.5 percent of women said they suffered from too much stress.

The KCDC said on its website that smoking, drinking alcohol and stress could cause high blood pressure and diabetes. (Yonhap News)