It is undeniable that celebrities sometimes go to extreme lengths to be skinny and fit in with Hollywood’s standards of beauty. Sometimes, however, women take dieting too far. Is that the case with actor Forest Whitaker’s wife, Keisha?

The 41-year-old beauty has always been slim, but she looked too thin when attending Academy Awards events with the acclaimed actor. (View pictures here.) Her arms were exposed and frighteningly skinny. Dr. Fred Pescatore, who has not treated Keisha, told Radar Online, “She is most likely about 110 pounds now but was 135 just a few years ago.

Or even she could be down to 105 pounds from 140 pounds … going up and down like this wreaks havoc on the metabolism and makes it increasingly difficult to continue to stay thin without more and more effort. Possibly to the point of starvation and pills. Looking good for the Oscars is one thing — looking like a poster child for a death camp is another.”

It is no secret that celebrities have more pressure than the average person to look perfect at all times. They have to deal with paparazzi that pop out of bushes to snap random pictures of them when they leave their cars. If the photo is taken at a bad angle, they can be certain it will be plastered online, or worse yet, on the cover of a tabloid magazine. So it may not be too surprising that many resort to bizarre (and unhealthy) measures to lose weight quickly. 

While it is unclear how Keisha lost so much weight recently, here are a couple of extreme celebrity diets that women have gone on to drop the pounds.

Grapefruit Diet

While grapefruits are one of the world’s healthiest foods, containing an excellent source of vitamin C, which supports the immune system, did you know that smelling the fruit is also reportedly beneficial? Diva Jennifer Lopez carries a vial of grapefruit oil and sniffs it. The aroma allegedly affects liver enzymes and promotes weight loss.

Cabbage Soup Diet

Actress Sarah Michelle Gellar has been linked to the cabbage soup diet, which calls into question how she had enough energy for her power-filled defense moves on “Buffy the Vampire Slayer.” This diet involves plenty of cabbage, green onions, green peppers, diced tomatoes, carrots, celery, chicken soup mix and V-8 juice. Other supplements include cranberry juice and black coffee. Then for the next seven days, you eat all the cabbage soup you want. This temporary diet has been used primarily to kick-start a weight loss plan, which hopefully involves more food.

Ice Diet

Apparently ice tastes just as good as food. Renee Zellweger, who is as well known for her movie roles as she is for her weight, took on this extreme diet. It involves eating ice cubes throughout the day to curb hunger.  “As long as I get that ‘constant feed’ feeling, it’s semi-tolerable,” she has been quoted as saying about the bizarre “food” choice.