By Debbie Emery - Radar Reporter
After stepping out in a gaping cardigan with her sunken chest, jutting ribs and gaunt face clearly on show, Selma Blair has shocked both fans and health professionals with her dramatic weight loss.
"She looks extremely malnourished and at 5'3" can only weigh 75 to 80 pounds," nutritionist and The Hamptons Diet author, Dr. Fred Pescatore, who has not treated the star, told RadarOnline.com in an exclusive interview.
As we previously reported, Blair, 40, and fashion designer Jason Bleick, 42, broke up in September after reportedly "fighting non-stop" and have since strived hard to be amicable for the sake of their 16-month-old son, Arthur, but the stress has made her a shadow of her former bubbly, healthy looking self.
"I'd say she's definitely a thin person now, and does look gaunt and sunken-in," Jackie Keller, CEO of NutriFit and author of Body After Baby exclusively revealed to Radar, explaining how heartbreak can have a devastating affect on someone's eating habits.
"Splitting up a home is one of the most traumatic experiences one can go through, even if it is something that both people want to do. It's not unusual to your lose appetite and it is very common to forgo eating since it can seem like more of a chore than a necessity," she explained.
"Additionally, sleep can be very disrupted (thus causing bags under the eyes and a haggard look), as you try to adjust to a new normal, which can also lead to weight fluctuations.
"Coincidentally, statistics show that as many women gain weight as lose it after divorce, so it's very individual," added Keller.