Dr. Kimberley Skead answers a question from the public.

Blood touches every single one of our organs as it travels through our bodies, and so it can often provide early signs that something isn’t right.

In our latest Ask a Cancer Researcher, Dr. Kimberley Skead answers a question from Matt about how our blood changes as we age, and what that means for predicting, diagnosing and treating disease like cancer.

See Skead’s full answer in the video above, and considering submitting your own question for a chance to be featured in our next video.