Princess Kate experienced extreme morning sickness (hyperemesis gravidarum) during her pregnancies.

She discussed her illness during a recent royal engagement in Kent.

Kate empathized with a person whose wife had the same condition.

She was hospitalized while expecting Prince George and had to miss engagements.

Meditation and deep breathing helped her cope with extreme morning sickness.

Kate admitted that her illness made her pregnancy challenging.

She had hyperemesis gravidarum during all three pregnancies.

Princess Kate wanted to leave the hospital quickly after giving birth.

Her openness offers comfort to others dealing with extreme morning sickness.