Therefore, a long needle isn’t necessary.
Studies show needle length doesn’t affectblood sugarcontrol.
However, injecting insulin using thicker needles can be more painful.

Trish Gant / Doring Kindersley / Getty Images
Both are considered suitable for adults and children.
These needles are very thin, with a gauge size ranging from 29 to 31.
Ask your healthcare provider if this length is right for you.
Talk with your healthcare provider about which needle size best meets your needs.
2016;10(4):914922. doi:10.1177/1932296815626723
American Diabetes Association.Insulin pens.
2014 Jan 21;9(1):e86637.
Breakthrough T1D.Tips for smooth insulin injections.