The NHS Blood and Transplant Service says almost half the donors in the East are aged 45 or over and they need to encourage more young people to roll up their sleeves and start giving.
With hospitals across the country using 7,000 units of blood every 24 hours the service needs to attract 1,000 new donors each day to keep stocks sustainable.
Click below to watch a report by ITV News Anglia's Serena Sandhu:
More top news
Son and daughter of murdered Chelmsford woman Maria Stubbings have been giving evidence at the inquest into her death.
Mostly dry with clear skies tonight. A chilly start tomorrow with sunshine developing.
Mostly dry with bright or sunny spells