Nick Jonas is upset with fitness company CrossFit after the company posted what he felt was a harsh and ignorant Twitter message about diabetes. Jonas, who was diagnosed with Type 1 diabetes when he was 14 years old, has expressed his disapproval for the Twitter message. Now a Twitter feud has started between CrossFit and Jonas.

The matter started when CrossFit tweeted a fake Coca-Cola ad that read: “Open Diabetes,” along with the caption, “Make sure you pour some out for your dead homies.” Jonas felt that the company's remarks were insensitive and accused CrossFit of being ignorant about the types of diabetes.

“This is not cool. Please know and understand the difference between type one and type [2] diabetes before making ignorant comments,” Jonas told CrossFit on Twitter. “Ignorant comments. Sensitivity to all diseases, and proper education on the cause and day to day battle is important,” he added. The 22-year-old singer has been extremely vocal about bringing awareness to Type 1 diabetes since his diagnosis.

Other Twitter users also took offense at CrossFit's post.

CrossFit fired back at Jonas on Twitter, saying it was aware of the difference between the two types of diabetes. “Anyone can get T2 diabetes, even those with T1. Stop assuming we don't grasp the difference and help us raise awareness. ‪@nickjonas,” CrossFit said on Twitter.

The company also re-tweeted a tweet by Twitter user Russ Greene, ‏‪@GreenPlusAnE. It shows a picture of Jonas promoting Coke. “Were you being 'sensitive' to type 2 diabetics when you accepted Coke $$ and promoted Soda? ‪@nickjonas,” Greene wrote, as re-tweeted by CrossFit. “Too much sugar= "lifestyle factor." Would Coke stop giving you money if you acknowledged that?” the company said in yet another tweet.