"Blood Sugar" is a single by Australian Drum & Bass band, Pendulum, released on 18 June 2007 in the United Kingdom. It was the band's final single with the Breakbeat Kaos label, and was released in 12" vinyl. Both tracks were later added to the 2007 reissue of the group's debut album, Hold Your Colour, due to their popularity. "Axle Grinder" contains samples from the United States TV show, The Twilight Zone.

The blood sugar concentration or blood glucose level is the amount of glucose (sugar) present in the blood of a human or animal. The body naturally tightly regulates blood glucose levels as a part of metabolic homeostasis.