Madeleine Hull
Adele's weight loss journey has been a topic of interest for many of her fans and the media. The singer lost 100 pounds, which sparked rumours that she was on the Sirtfood Diet. Adele has, however, denied following any diet, attributing her weight loss to a strict exercise regimen. The Sirtfood Diet, created by Aidan Goggins and Glen Matten, is a low-calorie, two-phase eating plan that involves eating foods that activate a protein called sirtuin. While the diet gained popularity due to its association with Adele, there is limited research on its effectiveness, and it may not be sustainable in the long term due to its restrictive nature.
| Characteristics | Values |
|---|---|
| Diet Plan | The Sirtfood Diet |
| Diet Type | Low-calorie, plant-based, high in polyphenols |
| Foods Included | Blueberries, strawberries, red wine, dark chocolate, green tea, onions, celery, parsley, arugula, kale, walnuts, buckwheat, citrus fruits |
| Foods Excluded | Processed snacks, treats, sugar, full-fat dairy, starches |
| Calorie Restriction | 1000 calories for 7 days, 1500 calories for 14 days |
| Weight Loss | Rumored to have lost upwards of 100 lbs |
| Adele's Response | Denies following the diet, credits weight loss to exercise |
| Nutritionist Opinion | Lack of clinical evidence for sustained weight loss, may not be sustainable |
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What You'll Learn
Adele's weight loss
The Sirtfood Diet, popularised in 2016 by a book of the same name, involves eating foods that activate a protein called sirtuin and cutting calories for weight loss. The diet is composed of two periods of calorie restriction that last 7 days and then 14 days. During the first week, one is only allowed to eat 1000 calories, and during the second week, this is increased to 1500. While the foods included in the diet are healthy, it could have some drawbacks due to its restrictive nature, making it challenging to follow in the long term.
Adele's breakfast might consist of soy yoghurt with mixed berries, chopped walnuts and dark chocolate, or a green juice made with kale, rocket, celery, apple, lemon, and matcha. Lunch could be a kale salad with parsley, celery, apples, and walnuts topped with olive oil and lemon juice, or a strawberry buckwheat tabbouleh with avocado, tomato, dates, and parsley with an olive oil and lemon dressing.
While the Sirtfood Diet gained immense interest due to its rumoured association with Adele, there is little to no clinical evidence to support this diet being healthy for sustained weight loss. Nutrition experts agree that there is no evidence to back up any claims that the diet has a beneficial effect on healthy weight loss.
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The Sirtfood diet plan
The Sirtfood diet is based on research on sirtuins (SIRTs), a group of seven proteins found in the body that regulate a variety of functions, including metabolism, inflammation, and lifespan. Certain natural plant compounds may increase the level of these proteins in the body, and foods containing them have been dubbed "sirtfoods". The diet combines sirtfoods and calorie restriction, which may trigger the body to produce higher levels of sirtuins.
The Sirtfood Diet was popularized in 2016 by celebrity nutritionists Aidan Goggins and Glen Matten, who published a book by the same name. The diet consists of two phases. Phase one lasts for seven days and combines calorie restriction to 1000kcal per day and three sirtfood green juices and one meal rich in sirtfoods. Phase two lasts for two weeks and includes three meals and one juice. The diet is relatively restrictive in both food choice and daily calories, especially during the initial stages. Foods to avoid include refined and processed foods that lack beneficial natural compounds, such as white bread, pastries, cakes, and sugary drinks.
The creators of the diet claim that following the Sirtfood Diet will lead to rapid weight loss, all while maintaining muscle mass and protecting against chronic disease. However, there is little to no clinical evidence to support these claims, and the diet does not comply with the weight loss guidelines recommended by the NHS. It can also be risky for people with a history of eating disorders or a fraught relationship with food.
Some examples of sirtfoods include blueberries, strawberries, red wine, dark chocolate, green tea, onions, celery, parsley, arugula, kale, walnuts, buckwheat, and citrus fruits. A typical Sirtfood-approved lunch may consist of a kale salad with parsley, celery, apples, and walnuts topped with olive oil and lemon juice.
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The science behind the diet
Although Adele has denied following the Sirtfood diet, the diet plan gained immense popularity in 2020 when it was rumoured that the singer followed the diet to achieve a weight loss of over 100 lbs. Adele has since credited her transformation to an intense exercise regimen, including strength training and boxing.
The Sirtfood Diet was created by celebrity nutritionists Aidan Goggins and Glen Matten, who work for a private gym in the UK. The diet is based on research around sirtuins (SIRTs), a group of seven proteins found in the body that have been shown to regulate functions such as metabolism and inflammation. Certain plant compounds may help to increase the level of these proteins in the body, and as such, foods containing them have been dubbed 'sirtfoods'.
Sirtuins have been put forward as possessing anti-aging and anti-disease properties, as well as possibly extending human lifespan. Many of these sirtfoods are rich in healthy compounds, including vitamins and micronutrients called polyphenols, which have been shown to have antioxidant and anti-inflammatory effects.
The diet combines sirtfoods with calorie restriction, which may trigger the body to produce higher levels of sirtuins. However, critics of the diet argue that there is little to no clinical evidence to support the diet being healthy for sustained weight loss. The extreme calorie restriction may lead to nutritional deficiencies and unhealthy eating habits.
While the foods included in the diet are healthy, it could have some drawbacks by restricting what and how much one can eat, making it tricky to follow in the long term. Additionally, there are many foods and nutrients that are left out of the diet, including protein sources, healthy fats, and whole grains.
Although the science behind sirtfoods is still new, adding sirtfoods to your regular diet over the long term may be beneficial.
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Celebrities who follow the diet
Although Adele has denied following the Sirtfood Diet, her rumoured attachment to the diet has sparked immense interest. Adele's weight loss journey has been a topic of public interest, with the singer losing upwards of 100 lbs. Adele credits her transformation to an intense exercise regimen, including strength training and boxing.
The Sirtfood Diet, created by celebrity nutritionists Aidan Goggins and Glen Matten, is based on research on sirtuins, a group of seven proteins that regulate metabolism and lifespan. The diet involves eating foods that activate sirtuins, such as blueberries, strawberries, red wine, and dark chocolate, while also cutting calories for weight loss.
Pippa Middleton
The Duchess of Cambridge's sister, Pippa Middleton, has reportedly experimented with the Sirtfood Diet.
Kim Kardashian
Kim Kardashian is known for her extreme diet plans, including the Met Gala weight loss plan and the carnivore diet, which involves eating mostly or only meat.
Heidi Montag
Heidi Montag has also tried extreme diets, including eating raw meat and following the controversial "Mayr Method," which includes cutting out caffeine, sugar, and dairy.
Rebel Wilson
Rebel Wilson has also claimed to lose weight and get healthier on an extreme diet plan.
Venus Williams
Venus Williams is a vegan athlete who previously followed a raw vegan diet to manage symptoms of an autoimmune disorder. She has since added cooked foods to her diet for more energy and nutrients.
Anne Hathaway
Anne Hathaway also followed a raw vegan diet for her role as yoga instructor Rebekah Neumann in "WeCrashed."
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Experts' opinions on the diet
While Adele has denied following the Sirtfood Diet, rumours about her attachment to the diet have persisted. The Sirtfood Diet, created by celebrity nutritionists Aidan Goggins and Glen Matten, involves eating foods that activate a protein called sirtuin and restricting calories for weight loss.
The Sirtfood Diet has sparked mixed reactions from experts. While some proponents of sirtfoods highlight the presence of these foods in Blue Zones, or areas of the world where people tend to live the longest, others argue that there is little to no clinical evidence supporting the diet's effectiveness for sustained weight loss.
One of the main concerns raised by experts is the diet's strict calorie restriction. Nutritionist Rachael Hartley cautioned that a 1000-calorie diet is below the daily amount recommended for a 2-year-old and may not provide adequate energy for adults. This type of calorie restriction can also be risky for individuals with a history of eating disorders or a challenging relationship with food.
Experts also question the diet's effectiveness for long-term weight loss and health benefits. While the diet may lead to initial weight loss, there is no evidence that it has a more beneficial effect than other calorie-restricted diets. Additionally, there have not been any long-term human studies to determine the tangible health benefits of a diet rich in sirtfoods.
Furthermore, critics argue that the Sirtfood Diet may be too restrictive in terms of food choices and daily calories, especially during the initial phase. While the diet promotes healthy foods rich in polyphenols, it excludes or restricts various food groups, including protein sources, healthy fats, and whole grains.
Despite these concerns, some experts acknowledge the potential benefits of adding sirtfoods to one's regular diet over the long term. Sirtfoods are rich in polyphenols, which have been linked to reduced risks of chronic illnesses and ailments associated with aging due to their antioxidant and anti-inflammatory effects. However, critics argue that instead of following a restrictive diet, one might as well start including sirtfoods in their meals right away.
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Frequently asked questions
Adele has denied following the Sirtfood Diet, attributing her weight loss to a strict exercise regimen. However, it was rumoured that she followed the diet to lose 100 pounds in two years.
The Sirtfood Diet is a low-calorie plan that focuses on eating sirtuin-rich foods, particularly green juice. It involves eating foods that activate a protein called sirtuin and cutting calories for weight loss.
Sirtuin-rich foods include blueberries, strawberries, red wine, dark chocolate, green tea, onions, celery, parsley, arugula, kale, walnuts, buckwheat, and citrus fruits.
A typical Sirtfood-approved meal could be a kale salad with parsley, celery, apples, and walnuts topped with olive oil and lemon juice.
The Sirtfood Diet is very restrictive in terms of calories, which can be difficult to follow in the long term. It also restricts many healthy foods, and there is little to no clinical evidence to support the diet being healthy for sustained weight loss.
