"Blood Sugar" is a song by Australian drum and bass band Pendulum, released as a single on 18 June 2007 in the United Kingdom.

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 and when run through a spectrogram; the song contains an image of Porky Pig giving the middle finger at the very end.

"Blood Sugar" / "Axle Grinder" entered the UK Singles Chart on week 25, 2007.

On 13 April 2018, the second teaser from the group's compilation album, The Reworks, was revealed to be a Knife Party remix of "Blood Sugar."