An Indian nurse (L) collects a blood sample from a policeman using a glucometer at a free diabetic health check-up camp on World Health Day in Hyderabad on April 7, 2016. 
The number of adults estimated to be living with diabetes has nearly quadrupled over 35 years, the World Health Organization (WHO) said on April 6, urging huge efforts to change eating habits and exercise more. "Beat Diabetes" is the theme of World Health Day 2016, a global health awareness day celebrated every year on April 7. / AFP / NOAH SEELAM        (Photo credit should read NOAH SEELAM/AFP/Getty Images)