Curious Kids: why is blood red?
- Written by Theresa Larkin, Associate professor of Medical Sciences, University of Wollongong
BonNontawat/ShutterstockWhy is blood red?
– Asher, 6 years 11 months, New South Wales
What a great question about something in our body, Asher.
Blood is inside our body, but we see it on the outside when we bleed, like when we get a cut or a nose bleed.
Blood is red because of something called haemoglobin. Haemoglobin is red and this makes our...

















