She claims her strict “raw food diet” is the reason for her amazing health, and appearance – and the fact she could pass for 16 even though she’s 29.
Susan eats nothing but uncooked fruit, vegetables, grains, seeds, nuts, and beans. She wolfs down dozens of portions every day, including a cold soup made from a bag of spinach, a large bunch of herbs and an entire lettuce.
But, like every meal that passes her lips, it’s never hotter than room temperature.
Susan said she hasn’t always been healthy and used to gorge on “all you can eat” Chinese meals when she was a student at Edinburgh University.
She also loved nothing better than McChicken Sandwiches and used to enjoy crazy nights downing shots of vodka jelly as a teenager.
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Posh spice swears by the Alkaline Diet which revolves around the pH levels, or acidity, of the body and its fluids (urine and blood). On Alkaline, 70 percent of all food should be raw, cow dairy shouldn't be consumed, and protein should be eaten in moderation.
The bride-to-be confessed in recent years that she's given up fad dieting for a healthier, more maintainable lifestyle. But before that, Aniston swore by baby food and a diet based on coconut oil, which is supposed to boost metabolism and help lose weight quickly.
The "Transformers" actress used to practice the Vinegar Diet -- straight-up shots of vinegar which supposedly cleanse out the stomach and its content.
The reality star has spoken openly about the different diets she dabbled in to keep her sexy curves. She admittedly tried the Atkins Diet, macrobiotic eating, eliminated all gluten, sugar and dairy from her diet at some point, and even tried the cabbage-soup diet (basically eating cabbage soup very day). She also endorses the weight loss system QuickTrim.
Butler is a yo-yo dieter and has once said that to go from "300" buff to "The Ugly Truth" soft, he binges on food then cleanses to undo the damage. He blamed his less-than-healthy eating habits on abstaining from smoking and drinking.
Charlie Sheen's ex was reportedly swept up in The Cookie Diet craze back in the day. It consists of six cookies and one low-calorie dinner of lean meat and vegetables each day, for a total of 1,000 daily cals.
J. Lo used to follow the Dukan Diet plan, a four-step diet which is similar to Atkins in that it focuses on protein above all else. She was also said to carry around grapefruit extract in pill form to kickstart her metabolism.
Queen Bey's Master Cleanse became the talk of the town when it helped her drop 20 pounds for her role in "Dreamgirls." Her diet consisted of nothing but lemon juice, maple syrup and cayenne pepper.
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The "Les Mis" star admitted to working out like crazy to keep her figure and periodically doing a raw food cleanse, which means eating only spinach for lunch.
The preggers singer once said she attempts to trick herself out of eating by telling herself french fries are poison, and allowing herself only one bite of dessert.
Forever Kelly said she used to cleanse once every two years with TrimFit cleanse, which allows one meal a day. Her ex-husband Peter Facinelli used to "suffer" through it with her.
The TV host was linked to two fad diets: The Ultimate Tea Diet, which had her drinking multiple cups of tea each day for 14 days in addition to eating three light meals; and a detox diet from Paltrow's guru, who put her on a three week regimen of smoothies plus one daily meal of raw veggies.
Cowell lost weight by consuming only veggie smoothies plus a small protein meal for dinner.
Leona kickstarted her dramatic weight loss a couple of years ago with a strict, month-long detox, subsisting on nothing but vegetables and water.
5'9" Whitney said she gained 25 pounds in college but has since slimmed down to 115 by working out and avoiding carbs, sugar and fried food.
However, all that changed when she got interested in yoga at the age of 21 during a six-month trip to India.
After coming home she became a vegetarian and trained to be a yoga teacher before stumbling across the raw food diet.
She said: “I went for something to eat in a cafe called Red Sugar in Edinburgh, which served raw food.
“The owners told me a bit about it so I went home, read up on it and decided to give it a go. The difference I felt in a day was incredible so I’ve done it ever since. I haven’t had a hot meal in seven years.
“The benefits include clarity, positivity, health, energy, radiance and the ability to make choices.
“Other things people have commented on include smelling good, great skin and youthfulness. People say I look good for my age. I’m also emotionally balanced and happy.”
Susan runs retreats through her company Twist and Sprout, teaching people about the raw food diet and healthy living.
Susan said she never gets cravings for cooked or junk food and stays disciplined at all times.
She said: “I feel if you sort out the emotional attachment to cooked food you don’t crave it any more.
“I focus on a very high liquid diet with lots of green juice, smoothies, soups and ‘elixirs’.
“I try to get as much leaf green veggies in to my diet as possible. I eat fruits for energy and sparingly eat fats from nuts, seeds and coconut.”
Last Christmas she prepared a raw feast for boyfriend Louie, 22, and her parents Marion and David. She said: “I made a fruits platter for starters — they loved it. We had raw mince pies made from nuts seeds and fruits for our sweet. I ate a giant salad with sprouted breads for my main course.”
Susan said her dad David grew up in Glasgow and is no stranger to a pie, despite keeping incredibly fit.
However, she said mum Marion also knows the power of healthy diets and even cured herself of ME 14 years ago by going on a sugar-free diet called the anti-candida diet.
Susan said: “Mum used to be practically bed-ridden but she reversed it with the sugar-free diet.
“She doesn’t have ME any more. I think her experience was one of the things that inspired me.”
Susan's Food Diary
5am: Wake up, drink 750mls lemon water
6:30-8:30: Yoga practice
10am: A litre of green juice made from blending a whole lettuce, bag of spinach and bunch of herbs.
11am-4pm: Snacks, including whole fruit (figs, mangoes, berries etc.), raw chocolate, green juice, and “superfoods” such as bee pollen, berries etc.
6pm: Large salad and/or green soups, or another raw dish created from fruits and vegetables, soaked nuts and seeds depending on what she feels she needs that day
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