young blood

American  

noun

1. youthful people.

2. fresh new ideas, practices, etc.; vigor.

---

young blood British  

noun

1. young, fresh, or vigorous new people, ideas, attitudes, etc

---

Etymology

Origin of young blood

First recorded in 1620–30

Example Sentences

With his gold-heeled shoes and a confidence that he’s too rich to die, Waltz’s wealthy arms dealer is a 19th century take on venture capitalists like Bryan Johnson and Peter Thiel who’ve been poking into the feasibility of pumping their veins with young blood.

From Los Angeles Times

She was thrilled to be in Rwanda after a breakout summer in Europe—to “bring the young blood,” as she put it to me later.

From The Wall Street Journal

Blood stocks are currently normal, but the service is launching a campaign called Gwaed Ifanc/Young Blood to protect them in future and encourage people to also join the stem cell registry.

From BBC

Longevity is something that we can best achieve not as individuals taking supplements and getting transfusions of young blood, but by collectively engaging in and contributing via tax dollars to practices that promote everyone’s well-being.

From Slate

Future studies are planned to test whether the disease takes advantage of the highly proliferative capacity of young blood cells to make patients' leukemia more deadly than older, less vigorous blood cells.

From Science Daily