Disclaimer: This article isn’t to endorse or condone the use of steroids, but to educate readers on steroids on a keto diet. 

Keto is one of the most effective diets for getting lean, whilst anabolic steroids are a powerful supplement many people take for both looks and strength. As keto becomes more mainstream, more people are wondering how steroids can affect their body while on keto.

Is this a match made in heaven or a contradictory combo?

Cutting Steroids & Keto

Cutting steroids like anavar, winstrol and trenbolone are know for their effectiveness for burning fat. If you follow keto whilst taking any of these compounds, it may encourage fat loss, as it’s more difficult to over-eat on a low-carb diet; due to more stable blood sugar levels reducing cravings.

There are 2 main benefits you could possibly experience, other than an accelerated fat loss when combining keto and cutting steroids and that includes increased glycogen and muscle retention.

Often bodybuilders who follow keto complain that their muscles look smaller. This isn’t necessarily due to muscle loss, but due to less glycogen inside the muscles. When taking steroids like anavar or trenbolone, your muscles may fill out – making your muscles look full and big.

Note: Winstrol is probably the worst steroid for looking full on keto, as this actually expels water out of the muscle cells. However, anavar is probably the best anabolic to keep your muscles looking big, as it causes intracellular fluid retention. 

Bulking Steroids & Keto

“If you take bulking steroids and follow keto – will you build muscle and burn fat at the same time?.”

Although going into ketosis may be an effective way to burn fat, the most important aspect of any fat-burning diet is calories in vs calories out.

If you’re consuming less calories than what your body burns each day – fat loss will follow. If you follow a low-calorie diet whilst bulking – your muscle gains are going to suffer.

Thus, it’s best to eat a high-calorie diet whilst bulking, as research has shown this to promote muscle growth.

Also, your muscles won’t be filled with as much glycogen on keto, which may reduce strength levels. So, although it may be possible to build muscle and burn fat on keto – it’s a bit of a mismatch as consuming lots of carbohydrates creates a better environment for building new muscle tissue.

Therefore, it’s probably best to save keto for beach season, rather than in the off-season when bodybuilders are trying to pile on mass by taking compounds like anadrol or dianabol.

Also, some bulking compounds cause fat gain and water retention, thus taking AAS like Anadrol or dbol could prevent any fat loss experienced from keto. One way to get around this would be to take trenbolone or testosterone instead, which are powerful muscle-builders and won’t cause you to gain fat.

Bulking steroids may improve recovery time, allowing users to train harder, longer and more frequently (without overtraining). However, on keto, intense exercise such as lifting weights can become increasingly difficult, as glycogen stores are low. Thus you may have less energy whilst taking steroids.

Keto Bad Breath 

Some people complain of bad breath whilst the following a keto diet. This can be quite potent, often smelling like ammonia and is often experienced during the first few weeks of the diet.

If this is something that bothers you, you may want to think twice about combining keto with anabolic steroids. This is because steroids can also cause bad breath in users.

This may be attributed to AAS spiking testosterone levels, as men are more prone to bad breath in comparison to women. And the main hormonal difference between the 2 sexes is testosterone.


If you want to build as much muscle as possible, whilst looking full and pumped – this isn’t a good combination.

However, if you simply want to burn fat and want to take cutting steroids whilst on keto – this may promote further fat loss, as opposed to a standard diet with moderate amounts of carbs.

So if you’re looking at possibly taking steroids while on a keto diet, make sure to consult a health professional first and think about the long term effects it can have on your body.

Also, consider natural steroid alternatives, when trying to bulk when following a keto diet.