Nick Jonas is on a campaign to educate people – including corporations – about diabetes.

The singing sensation took to Twitter over the holiday weekend to inform the CEO and founder Glen Glassman of Crossfit about the difference between Type 1 and Type 2 diabetes.

The fitness company posted a tweet on June 29 featuring a photoshopped image of a Coca-Cola bottle and the words "open diabetes."

The image was a reference to a current Coca-Cola advertising campaign that uses the slogan “Open Happiness.”

Jonas, 22, was diagnosed with Type 1 diabetes at the age of 13 and was upset that Crossfit implied that sugary soda contributes to all types of diabetes.

“This is not cool,” Jonas wrote on his own Twitter feed. “Please know and understand the difference between type one and type [two] diabetes before making ignorant comments.”

Type 2 diabetes, which accounts for 90 percent of cases, is linked to obesity and poor eating habits, including soda drinking. It is often called "adult-onset" diabetes.

Type 1 diabetes, which used to be known as “juvenile diabetes,” occurs when the body’s immune system mistakenly destroys the body’s ability to make insulin. The cause is unknown.

Jonas, with his brothers Joe and Kevin, comprise the hit group, the Jonas Brothers. They are also founders of the “Change for the Children Foundation,” which raises diabetes awareness.