More than 12,000 Californians lost limbs or toes to diabetes in 2016, state data show. More than 2.5 million people in the state have been diagnosed with adult diabetes, or Type 2, and risk a similar fate if it goes unchecked. That’s especially true for low-income patients, who may lack regular preventive medical services. They’re 10 times as likely as their wealthier counterparts to lose a toe, foot or leg, according to one study.