Hormones coordinate different body functions by carrying messages through the bloodstream to target cells and tissues. Hormonal imbalances occur through inadequate or excess hormone synthesis, which ...

As a deadly heat wave continues to ravage the U.S., new evidence suggests the human body may stop functioning optimally when outside temperatures climb to 104 to 122 degrees Fahrenheit. Research ...

In many cells of the human body, hair-like protrusions known as cilia act as antennae, allowing cells to receive signals from their environment and other cells. As cells grow and divide, each cilium ...