The Sirtfood diet is popular right now. This high profile method of weight loss has been attracting attention in the media and has been taken up by celebrities as well.
Results look good. Adele lost a lot of weight using it and others such as Jodie Kidd, Ben Ainsely and the boxer David Haye are fans of the diet. But it is not only celebs who are attracted to this plan. The Sirtfood diet allows you to eat chocolate and drink red wine and coffee and still lose around 7lbs in 7 days, so what’s not to like?
We take a look at the Sirtfood diet to find out more.
First up, what is Sirtfood?
Sirtfood is ordinary food that is high in sirtuin activators. Sirtuins are proteins in the body that protect our cells from inflammation and damage and may also help regulate the metabolism, build muscle and burn fat. Although Sirtfoods and the concept of sirtuin activators sounds like the stuff of science fiction, many food stuffs are naturally high in sirtuin activators. Many of us are already eating and drinking numerous Sirtfoods without even realising!
The most common Sirtfoods are:
- Green Tea
- Good quality dark chocolate (containing at least 85 per cent cocoa, such as Green & Blacks)
- Citrus fruits
- Red onions
- Red wine
The Sirtfood Diet Plan
There is more to the Sirtfood diet than simply bingeing on red wine and strawberries! There is a diet plan, which does not look quite as easy, and a green drink to contend with.
The first three days of the diet you consume no more than 1000 calories. These calories are mainly provided by a green drink which you make in a blender and drink three times a day. The drink contains plenty of green ingredients including kale, rocket, green tea and apple. See the Green Drink recipe further down.
You also eat a meal which is rich in Sirtfoods. There are plenty of Sirtfood recipes available from any of the growing number of Sirtfood recipe books on the market as well as the original publication.
On day 4 through to day 7, your calorie intake is increased to 1500 calories. This is composed of two green drinks and two Sirtfood rich meals. According to the creators of the diet, this will result in weight loss as much as 7lbs in a week.
The second part of the weight loss program is the maintenance phase. You stay on this for 14 days, eating a menu composed of Sirtfood rich foods and drinking the green juice at least once a day. According the inventors of the diet, the maintenance phase is open ended and is a healthy way to live as well as gradually lose weight.
The claims about the Sirtfood diet and the book
The Sirtfood Diet was created by a couple of health food consultants and authors Aiden Goggins and Glen Matten who published a book called The Sirtfood Diet: The revolutionary plan for health and weight loss. Both men hold degrees in Nutritional Medicine.
According to the advertising for the diet book, switching to Sirtfood has numerous benefits.
Switch on your body’s fat-burning powers, supercharge weight loss and help stave off disease with this easy-to-follow diet developed by the experts in nutritional medicine who proved the impact of Sirtfoods
Dark chocolate, coffee, kale – these are all foods that activate Sirtuins and switch on the so-called ‘skinny gene’ pathways in the body. These are the same pathways more commonly activated by fasting and exercise – meaning they help the body to burn fat, increase muscle and improve health.
Based on trials that showed an increase in lean muscle, as well as consistent weight loss of 7lbs over the course of just one week, The Sirtfood Diet is revolutionizing sports nutrition and healthy eating.
The Sirtfood Diet is a diet of inclusion not exclusion, and Sirtfoods are widely available and affordable for all. This is a diet that encourages you to pick up your knife and fork, and enjoy eating delicious healthy food while seeing the health and weight-loss benefits.
The diet industry has been quick to jump on the Sirtfood phenomenon with numerous Sirt food recipe books hitting the market.
So what is the science behind Sirtfood?
Sirtuins are proteins discovered in humans a few decades ago and the various types are numbered SIRT1 through to SIRT 7.
Their full title is Silent Information Regulators (SIRs) and they have been studied by scientists since their discovery. SIRs appear to protect metabolic health with an effect upon sleep patterns, preventing free radical damage to cells and prevention of premature ageing.
SIRS may also help prevent against common diseases such as cardiovascular issues such as strokes and heart attacks, Alzheimer’s and more. When it comes to weight loss, SIRS may help prevent fat cells from duplicating.
Although this all sounds good and this idea of sirtuin as your own body’s ally to health and weight loss is appealing, there is not much real evidence that Sirtfoods will work in the way as described. Most research has been carried out on mice and lab testing on yeast cells and human stem cells. We could find no record of any human clinical trials involving Sirtfoods.
According to Matthew Haines, senior lecturer at the University of Huddersfield, we actually know very little about the effect of Sirtfood on humans.
Sirtuins contribute to regulation of fat and glucose metabolism in response to changes in energy levels. They might also play a part in the effect of calorie restriction on improvements in ageing. This is perhaps via Sirtuins’ effects on aerobic (or mitochondrial) metabolism, lowering of reactive oxygen species (free radicals) and increases in antioxidant enzymes.
Furthermore, research suggests that transgenic mice with higher levels of SIRT6 live significantly longer than wild-type mice, and that changes in SIRT6 expression may be relevant in ageing of some human skin cells. SIRT2 also has been shown to slow metazoan (yeast) ageing.
Testing on mice, yeast cells and human stem cells does not prove that Sirtfoods will work equally well for humans.
Is the Sirtfood diet healthy?
Despite the lack of real evidence about Sirtfoods, most of these foodstuffs are undeniably healthy because as well as the SIR receptors, Sirtfoods generally contain thousands of phytonutrient compounds including many different types of antioxidants.
However, these compounds are not exclusive to Sirtfoods and many experts question the claims that foods labelled as Sirtfoods are any better for general health and weight loss than any other healthy diet.
Sirtfood for Weight Loss?
Although the authors Goggins and Matten promote the Sirtfood diet for general health, the weight loss angle of the program is crucial to the advertising with the snappy “lose 7 lbs in 7 days” message.
In addition, the low calorie diet and the ubiquitous green drink seems to be veering off into fad diet territory. Dieticians have concerns about the low calorie diet which you follow for three days and when it comes to losing 7lbs in 7 days there are concerns about the so called healthy status of this plan. The usual dietary advice is to take weight loss slowly and to expect to lose no more than 2lbs a week.
Most of this initial 7lb weight loss will be composed of fluids or “water weight” and as soon as you revert to a normal diet, this weight will pile back on.
The science behind the concept of Sirtfoods has also yet to be proven. A healthy balanced diet will probably achieve many of the same aims. Choosing foods because they are high on the sirt food list could result in unhealthy choices. Although a glass of red wine or having chocolate sometimes is good for morale there is nothing intrinsically healthy about overdoing these.
Can you lose weight with the Sirtfood Diet?
The Sirtfood diet, once you are past the initial stage allows you to eat a wide range of foods and we like the fact that you cook and prepare meals rather than relying on supplements and shakes. Many people have bought the books and seem satisfied with recipe choices. Many people have lost weight too.
However, evidence suggests that the simple act of thinking about your health and what you are eating will help weight loss because it provides structure to your eating plan. And with the emphasis on plenty of fresh veg such as kale we can see that this diet plan is healthy.
There is no real evidence that the Sirtfood diet will provide the long lasting effects that are claimed and many people will simply give up on it once the novelty wears off.
There is a range of customer opinion to the Sirtfood Diet. Some people are satisfied such as this customer,
Love this book, great meal plans for one person. This book gives you a kick start into healthy eating for life. The recipes are great, healthy and very tasty. Not felt the need to pick. Would highly recommend this book and the diet.
Some people feel it is OK but no different to many other health books on the market,
This book is interesting and I will adopt some of the suggested foods, but it didn’t grip me like other books on healthy eating I have read. I will certainly try and incorporate more ‘sirt’ foods into my diet but do not intend to follow the plan per-se
Many people have reported losing 7lbs in 7 days, such as this reviewer,
Did exactly what it promised, I lost 7 lb”s in one week
Other people have struggled. Negative comments include,
TOO INTENSE!! Try it and find out!!
Load of tosh
Many people are undecided,
Interesting concept. The jury is still out. I will include more of these …lots more of these in my diet as I already eat them and see if I lose more. Certainly a very healthy concept and I love the foods it advises. All I can do is wait and see.
The Sirtfood diet may help you lose weight and many people like the recipes. We like the fact that the diet is composed of home cooked food and the overall impression is that this diet is one of the better fad diets on the market. In our opinion it looks better than the Dukan diet or Atkins diet because the meals seem more balanced.
However, any diet that requires you to stick to 1000 calories and drink a special smoothie is certainly a fad diet. Not everyone will enjoy the green drink and we suspect that after a few times it will become undrinkable. In most cases these types of fad diet only lead to yoyo weight gain rather than long term weight loss.
In addition, the whole premise of the diet is simply unproven. The research into Sirtfood has never included a human clinical trial and is based on animal and lab testing. You could find that you up your Sirtfoods at the expense of other available ingredients for no reason.
All that said, the Sirtfood diet does look safe and pretty healthy and if you need a little extra to add to an ordinary balanced diet that helps you lose weight you may find that this one fits the bill.
Sirtfood Green Juice Recipe
We love the individual ingredients contained in this drink. Our only issue is with the act of mixing them all together and drinking them. It sounds pretty revolting to us, especially when you consider you have to drink this multiple times a day!
- 75g kale
- 30g rocket
- 5g flat-leaf parsley
- 5g lovage leaves (optional)
- 150g celery, including leaves
- 1/2 medium green apple
- Juice 1/2 lemon
- 1/2tsp matcha green tea
Step 1: Juice the kale, rocket, parsley and lovage, if using, then add the celery and apple and blend again. Squeeze in the lemon.
Step 2: Pour a small amount of the juice into a glass, then add the matcha and stir until dissolved. Add the remaining juice and serve immediately.
Disclaimer: Our reviews and investigations are based on extensive research from the information publicly available to us and consumers at the time of first publishing the post. Information is based on our personal opinion and whilst we endeavour to ensure information is up-to-date, manufacturers do from time to time change their products and future research may disagree with our findings. If you feel any of the information is inaccurate, please contact us and we will review the information provided.