The most common health-related causes of death are heart disease and cancer. Roughly 14% were diagnosed with diabetes in 2000. Around half of all Arab men smoke. Life expectancy has increased 27 years since 1948. Further, due largely to improvements in health care, the Arab infant mortality rate dropped from 32 deaths per thousand births in 1970 to 8.6 per thousand in 2000. However, the Bedouin infant mortality rate is still the highest in Israel, and one of the highest in the developed world.