Ketosis & Testosterone | Low Carb Diet Increases Testosterone: Thomas DeLauer
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can ketosis help increase our testosterone levels you guys have all asked in the comments section and Here I am with the research in the studies to show you what I think and to show you that ketosis may very well actually lead to a quite significant increase in testosterone but in this video I’m going to break down two things I’m going to break down the fact that yes ketosis can significantly increase testosterone but I’m also going to play devil’s advocate and then look at a study that showed that lowering carbohydrates might decrease it so make sure you listen to the entire video I’m going to explain the actual theory and sort of my formulation and what I’ve got it from this first and foremost for those that don’t know brief explanation of ketosis ketosis is simply where you are running on about 5% or less of your daily energy from carbohydrates meaning you’re forcing your body to utilize fats as a source of fuel when you use fats as a source of fuel ketosis happens you start generating ketone bodies and that becomes your primary source of energy but I’ll save all the details on ketosis for another video let’s get in to the fun part the first part I want to talk about is cholesterol and testosterone and how ketosis does play a role in increasing testosterone and it has to do with cholesterol you see when we’re in a ketogenic diet we’re getting approximately 75 percent of our overall calories from fats well naturally with that we’re going to have any increase in cholesterol dietary cholesterol that we’re taking in but please please do not believe everything you hear about cholesterol that’s out there a lot of it is hogwash see our bodies produce on their own like 3,000 milligrams of cholesterol on their own now why are we complaining if we eat 200 milligrams worth of cholesterol form eggs if you add it up doesn’t make a lot of sense a lot of it comes down to lies a lot of it comes down to money let’s not really focus on that but don’t worry too much about cholesterol unless you already have a cholesterol issue now cholesterol is a steroid hormone just like testosterone is what that means is that it has the same molecular structure of a steroid ring as all the sex hormones do so it doesn’t mean it’s a steroid it just means it’s a steroid hormone now cholesterol is essentially a parent sterile it’s a parent hormone to stas room how that works is cholesterol converts into something called pregnenolone okay and then that pregnenolone is acted upon by an enzyme called cytochrome p450 cytochrome p450 helps the conversion of cholesterol into pregnenolone and into testosterone yes more cholesterol equals more testosterone lower cholesterol equals lower testosterone it’s a simple mathematical equation all based upon pregnant alone and that cytochrome p450 but without some legitimate science this is just another old YouTube video that you can’t necessarily trust so let me drop some science on you and this is going to blow your frigging hair back okay so this study looked at two groups of people the first group of people were on a very low carbohydrate ketogenic diet a keto diet okay where they consume 5% of their calories from carbs then they consume about 75% of their calories from fat and then they consumed about 20% of their calories from protein the second group of people consumed a traditional Western diet where they consumed 55% of their calories from carbohydrates they consumed about 25% of their calories from fat and 20% from protein so high carb or moderate car versus keto what they were measuring was overall cholesterol testosterone and insulin and this is absolutely insane and proves what I’m making in this video what they found was there was an increase in total cholesterol from the ketosis group no surprise but listen to this entirely the increase in cholesterol of about six point six nine milligrams per dekaliter was all in HDL the good cholesterol whereas the decrease in cholesterol from the Western carbohydrate rich diet with a decrease in HDL as well so the Western carbohydrate rich diet lost good cholesterol even though they lost total cholesterol which by mainstream standards we’d be told is good but the keto group increased their cholesterol which by mainstream standards we would be told is bad but they increase the good cholesterol okay now get this testosterone levels in the ketogenic group increased dramatically by a hundred and 18 nanograms per dekaliter okay whereas the group that was on the non keto diet the carbohydrate rich diet saw a decrease in testosterone yep that’s right a36 nanogram for dekaliter decrease in testosterone now to add insult to injury those on the ketogenic program also saw a decrease in levels of insulin now insulin plays a big role in a lot of negative functions in the body even though it’s very important when it comes down to testosterone production and when it comes down to fat accumulation we don’t really want a lot of insulin now I have to play devil’s advocate I have to share another study that looked at something else but hear me out again on this because it’s all going to make sense this next study saw that a low carbohydrate diet not a ketogenic diet okay a low carbohydrate diet with about 30% of calories coming from carbs that found a lower instance of testosterone levels okay they found a significant decrease in testosterone levels but what we have to look at that was not a ketogenic diet you see if you’re not all the way in ketosis you’re sitting in that gray area where you’re just low carb and ultimately low calorie your low-carb and you’re kind of low fat you’re not getting the benefits of ketosis you’re sitting in this washy gray area where functions of hormones are kind of nebulous things don’t work all that well there’s not a lot of research to back it up so it’s not a keto diet so it doesn’t really conclude what we’re saying here now I’m not a doctor but I can hypothesize based on the research that I’ve done and based on the simple formulation of cholesterol equaling testosterone and ketosis being really good for a lot of other functions of the body that it may be a good route to go to potentially boost testosterone again I’m not a doctor I say this with a grain of salt all my own formulation in my mind based on my own research but I hope it helps you if you’re on the fence of determining whether keto might be a thing for you and it goes without saying if you’re in ketosis monitor your triglycerides if your triglycerides are high and you’re in ketosis ketosis may not be for you it’s certainly not for everybody and it’s not a diet that I live on 100% of the time it’s something that I entertain now and then to get the benefits of all different kinds of foods and to enjoy a different variety of diets so I can enjoy a different variety of foods coming into my body so I have well-rounded approach as always keep it locked in here and let me know if you have any ideas for future videos and post your questions below and please share this to your social networks share it via email share it to Facebook get it out on Twitter and let’s spread the word of alternative health and taking health into our own hands I will see you next video
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Does Ketosis Increase or Decrease Testosterone?
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Ketosis Diet and Testosterone | Low Carb Diet Increases Testosterone: Thomas DeLauer
Ketosis is a metabolic state that occurs when dietary carbohydrates are in such low quantities that your body must rely almost exclusively on fatty acid oxidation and ketone metabolism
A traditional ketogenic diet sees you reduce carbs to around 5% of total energy intake with a maximum carb limit of 50g per day.
This means eliminating starchy vegetables, pasta, rice, sugary drinks and all sweet treats from your diet – results in your body switching from carb burning to fat burning.
Ketosis and Testosterone
There has been conflicting evidence as to whether or not ketogenic diets reduce or increase testosterone
However, it should be noted that many of the diets studied weren’t truly keto, but rather a “lower carb diet”
For example, one study found that when carbs were reduced to 30% of total energy intake, testosterone significantly reduced; as did its ratio to cortisol. Keep in mind that keto diets suggest a carb level of as little as 5%
This resulted in too little carbs to help with the production of testosterone and too little fats (cholesterol) to help with the production of testosterone (1)
Sitting in the grey area of not enough fats nor carbs
Cholesterol and Testosterone
A ketogenic diet is roughly consists of about 75% fats, which will also be high in cholesterol
Cholesterol present in all of your cells, being especially dense in the membrane where it gives your cells the ability to send messages between each other and it can also be found in high amounts inside the brain
Your body needs cholesterol to produce its sex hormones. So if you drive your cholesterol down too far, you’ll be lacking in testosterone
Testosterone and cholesterol are both classed as steroids because they share a similar ‘steroid ring’ chemical structure – as do all other steroid hormones.
Cholesterol is the ‘parent compound’ of all steroid hormones, including T, as it is needed to form all steroid hormones. This makes it a sterol.
In order to convert into testosterone, it is converted into pregnenolone by an enzyme called Cytochrome P450.
From there it converts into other hormones such as androstenedione, eventually ending up as testosterone.
Simply put, cholesterol is a precursor to testosterone (2,3)
The study looked at very low carbohydrate ketogenic diets (VLCKD) relative to a traditional high carbohydrate diet in resistance-trained athletes.
26 college-aged resistance trained men volunteered to participate in the study and were divided into two groups
– VLCKD (5 % CHO, 75 % Fat, 20 % Pro)
– Traditional western diet (55 % CHO, 25 % fat, 20 % pro). – study lasted 11 weeks
Total cholesterol increased slightly in the VLCKD group, while it decreased in the traditional western group.
However, this rise was driven by an increase in HDL in the VLCKD group (6.69 mg/dl) compared to the western (-1.6 mg/dl) with no changes in LDL.
Total testosterone increased significantly in the VLCKD diet (118 ng/dl) as compared to the western (-36 ng/dl) while insulin increased significantly in the western group (3.7 uIu/ml) compared to the VLCKD (.1 uIu/ml).
Concluded that a VLCKD is safe and increases testosterone levels while also increasing insulin sensitivity.
Even though the total cholesterol increased in the VLCKD group, their HDL (healthy cholesterol) drove this response. (4)
1) Does a Ketogenic Diet Affect Testosterone Levels? – TestoFuel Blog. (n.d.). Retrieved from
2) The Cholesterol and Testosterone Relationship – TestoFuel Blog. (n.d.). Retrieved from
3) Cholesterol and Testosterone: Hormonal Precursor | Anabolic Men. (n.d.). Retrieved from
4) Carbs vs. fat research update. (n.d.). Retrieved from /