They are a normal response to natural hormonal changes in your body.

The hormonal changes that women go through at different times of their lives may be a factor.

In most cases, the cause of the hormonal changes is unknown.

Some researchers think it may be related to hormonal changes.

"It has a lot to do with hormonal changes," he says.

These hormonal changes can make you feel more emotional than usual.

And recent studies have linked the chemical to hormonal changes.

These effects are related to the hormonal changes a woman's body is going through, and they affect each woman to a different extent.

Genetics, the aging process, and hormonal changes may also play a role in their development.