"Pretty Little Liars" actor Sasha Pieterse gained prominence as a teenager playing Alison DiLaurentis.
For seven years on Freeform, the now-27-year-old's body transformed tremendously.
Polycystic ovarian condition caused Pieterse to gain 70 pounds throughout the event.
She told Taylor Lautner's "The Squeeze" podcast how she visited multiple doctors to treat her symptoms and stop gaining weight.
“This is part of the health issues I was speaking of while going through ‘Pretty Little Liars,’”
The "PLL: The Perfectionists" actress said gynecologists told her her body will control her irregular menstruation cycle. She "started noticing a difference in just my metabolism in general" around 15.
“It was the most frustrating experience and disheartening because no matter what I did, no matter how well I behaved, no matter how great I treated my body,
things were actually getting worse rather than better, it was very very confusing,” the mother of one groaned.