What Is the Sirtfood Diet?

If you have been following Byrdie just for a short while, you will recognize that we are skeptical about various trends on weight loss, and also we are not terribly into the thought of fasting or dieting. Whereas, the weight will give us essential information but it is not the one and only sign of being healthy. Being obese or overweight comes with a huge number of factors related to health risks. You should also remember that BMI (body mass index) and weight are not absolute measures of ideal health status. A person might be claimed healthy though the BMI standards show that they are overweight. Thus, if you feel pressurized for losing weight, you need to unlearn certain things like that weight is the best possible indicator of an individual's health status.

That said, our readers always keep hearing regarding the updated trends in the diet. And as we wish to keep everyone updated about the latest news, we were thinking to do an elaborate breakdown related to one of the trending diets currently which is the Sirtfood diet.

This type of diet is claimed to prevent diseases and promote excess fat loss while you can still keep on consuming red wine and munching on chocolates. This single reason is probably enough for you to get lured. But, now comes to the main question, does this Sirtfood diet really works? Or is this diet safe? In this article, renowned dieticians have shared everything about this Sirtfood diet.

What do you mean by the Sirtfood diet?

In the past couple of years, this kind of diet has made high popularity and it is quite trending currently. All thanks to the celebrities like Adele who helped in popularizing this Sirtfood diet. The diet is generally based on a few protein groups in our body known as sirtuins. This protein plays a very essential role in the regulation of inflammation, metabolism, and other bodily functions.

Foods that are encouraged in this Sirtfood diet, claim to be rich in sirtuin activators and this helps in increasing the sirtuin amounts in your body. The main idea that you should get by this is that if you are rich in sirtuins, your body will perform better by regulating metabolism, decreasing inflammation, and many more.

This particular diet generally focuses on intaking a diet of low-calorie foods that have a good amount of sirtuins or SIRTs. These belong to a protein family that is known to play a key role in keeping the cells of your body healthy and of reducing inflammation. Bonus! It can help you to reduce the signs of aging as well. The thought behind the nature of this diet is that if you eat these foods, particular genes get switched on which results in burning fat and increasing your overall metabolism.

How does this particular diet work?

This Sirtfood diet is normally based on restrictions on calories and consumption on a particular food list. If you want to try this diet, you will get to know that it is divided into 2 phases that will extend over a period of twenty-one days (phase one is of seven days then phase two might last till fourteen days).

In the beginning, for the initial 3 days, you are encouraged to intake just a thousand calories every day and this includes only one whole meal and any three green Sirtfood juices. For example, the requirement of calories generally varies from one person to another, but, adults, especially women are not encouraged to consume 3 Sirtfood-rich meals every day, with a type of green juice for sure.

From day four to seven, your daily intake of calories should be upped to fifteen hundred and you are highly encouraged to intake 2 green juices along with 2 whole meals every day. The second phase of this diet will allow you to consume 3 Sirtfood meals along with one green juice every day. Now, if one decides to carry on with the diet even after the completion of 21 days, there will be no restriction on calories, instead, you will be encouraged to consume 3 Sirtfood-rich meals every day and one green juice as well.

What are the foods that are Sirtfood approved?

  • Kale
  • Green tea
  • Dark chocolate
  • Red wine
  • Citrus fruits
  • Apples
  • Walnuts
  • Parsley
  • Onions
  • Turmeric
  • Blueberries
  • Arugula
  • Capers
  • Soy
  • Strawberries
  • Buckwheat
  • Olive oil (extra virgin)
  • Coffee
  • Medjool dates
  • Chili (bird's eye)
  • Red lettuce

The Sirtfood-approved green juice must consist of kale, arugula, celery, parsley, matcha, lemon juice, and an apple.

Is Sirtfood safe?

Professional dieticians generally say that almost the whole idea of this Sirtfood diet is safe but, just the part of calorie restriction is cumbersome. The first phase of this diet consists of numerous calorie restrictions (as low as a thousand calories every day) and this might impact your blood sugar level negatively, especially if you have diabetes.

The idea of losing weight rapidly through this diet is also a bit unrealistic. For an adult, an intake of just a mere thousand calories can never be sufficient. This restriction might cause extreme hunger, fatigue, and lightheadedness, and also this could add up to destructive disorders in eating.


  • The food mentioned in the list of Sirtfoods has a ton of health benefits and it does not depend on whether you wish to or not to consume in your diet.
  • Most of us can benefit by eating more of what's on the Sirtfood list.
  • The list of foods is high in antioxidants and polyphenol.


The only drawback we can think of now is that there are not many types of research or studies done to support its authenticity and effectiveness. It is very important for you to understand as well that diets that are restrictive in nature are not sustainable in the long run.


This particular diet may be highly effective for a few people but the weight loss that comes from the diet is most likely to occur from calorie restriction instead of nutritious foods.

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