Muscles and joints shift and jostle. The heart's pounding rhythm speeds up. Blood roars through arteries and veins. Over the course of a pregnancy, every organ in the body changes. Initiated by a range of hormones, these changes begin as soon as a pregnancy begins. Explore what we know— and don't know— about pregnancy's effects on the body and brain. [Directed by Roxane Campoy and Charlotte Cambon, narrated by Susan Zimmerman, music by Flavien Van Haezevelde / Studio Bloom].

TED-Ed: The surprising effects of pregnancy

The surprising effects of pregnancy

The intricate dance between mother's immune system and fetus showcases the complexity of pregnancy's biological changes.

Pregnancy transforms every organ with a 50% increase in blood volume and essential shifts in heart and kidney functions.

As the uterus grows, it impacts breathing and posture, necessitating physiological adjustments to maintain oxygen supply.