>> reporter: within months, he died. >> as a mom, i feel like it's my fault. >> reporter: millions of americans are struggling with the same terrifying problem. according to new data from the cdc, more than 13% of adults don't take their insulin as prescribed because it's too expensive. 24% have asked the doctor for a cheaper prescription. now states like colorado are taking action. this summer the governor signed the first law to cap the price of insulin at $100 a month for patients with insurance. other states including california, minnesota and pennsylvania are also considering laws to rein in prices. >> this is a crisis for the diabetes community. if a person rations insulin there are immediate consequences. >> reporter: this grieving mother now an advocate for others so they won't have to endure the pain she lives with every day. >> this world feels a little emptier without him in it. >> reporter: nbc news.