What Is Aromatase?

(Last Updated On: August 9, 2018)

What Is Aromatase?

While researching testosterone and how to increase it, one phrase that you may well have heard of is Aromatase.

But what is Aromatase? – What Part Does It Play?

Aromatase is an enzyme that is found in both male and female bodies. It is responsible for a key step in the biosynthesis of Estrogen.

Aromatase is found in many parts of the body, namely the testes, brain, adipose tissue, placenta, skin, blood vessels and in bone. 

It is also present in large amounts in tissue cells of uterine fibroids, great and endometrial cancers.

Aromatase is responsible for the changing of androgen hormones such as Testosterone into Estrogen. 


It’s a completely natural process, which can be accelerated in men who turn to injected anabolic steroids to boost their muscle mass and strength.

In the young, Aromatase can help control glucose and the management of cholesterol in the body, however in adult males if left unchecked it can cause a reduction in muscle tone, strength and libido, along with an increase in belly fat.

Our body uses a process known as homeostasis  to regulate and keep the subtle balance between Testosterone and Estrogen. It also balances our temperate and fluid balance. Its main use however is to help synthesis fats and cholesterol in our blood.

Why Do Men Need Estrogen

The male body needs a small level of Estrogen to function, it helps control bone density, and when balanced alongside testosterone helps to maintain muscle tone, mass and strength. 

It is also though to help control the way the body uses glucose when recovering from exertion.

Testosterone levels can be effected by aromatase in the body if levels increase. The greater the level of aromatase in the blood, the more Testosterone will be turned into Estrogen.

Men who use anabolic steroids are particularly at risk of increased Estrogen levels in their body because the use of synthetic hormones effectively shuts down natural testosterone production. 

They can be left with problems such as Gynecomastia (man boobs), increased body fat, cholesterol problems as well as decreased immunity. (Not forgetting that anabolic steroids have some serious side effects in their own right).

effects of aromatase

In our younger years the delicate balance between Estrogen and Testosterone is kept stable, while it remains so, any threat to testosterone is usually kept to a minimum. 

With age, as our natural Testosterone levels start to reduce (by about 1-2% per year after the age of 30) the effects of Estrogen can start too take hold, reducing the levels of testosterone even further.

This reduction can effect a man in many ways. He will start to put on body fat, his muscles will soften, losing tone and strength. 

His libido will reduce, possibly causing erection problems and his moods will change, with depression and lower feelings of self worth and confidence.

All in all, It is Estrogen that causes many of the problems experienced when older men develop low testosterone (hypogonadism).

Health Risks

aromatase in men

More serious are the increased risks of certain cancers in men, these can include Prostate, Breast and Colon Cancers. 

Women can also be more at risk with elevated Estrogen levels, they too can be at increased risk of Breast, Uterine and Ovarian cancers.

They can also experience other health problems such as:

  • PMS symptoms
  • Cervical Dysplasia
  • Uterine Fibroids
  • Endometriosis
  • Infertility
  • Fibrocystic Breasts 
  • Weight Gain

How To Stop Aromatase

It’s virtually impossible to stop aromatase completely, it’s a natural hormonal process. 

However you can reduce the effects of it and as such help retain testosterone levels, reducing the adverse effects of low T. 

Younger men will find that its easier to put on muscle mass, and older men will find that they keep some of their youthful energy, muscle tone and sex drive.

There are other lifestyle changes that you can adopt to help reduce the effects of aromatase

Foods That Inhibit Aromatase

You can also help reduce the effects of aromatase with some simple changes to your diet. 

It is recognised that certain foods have anti aromatase effects that reduce the effects, allowing greater amounts off male sex hormones to remain in the blood, doing what they need to do.

Look to increase your intake of:

  • Broccolli
  • Cauliflower
  • Brussel Sprouts
  • Cabbage
  • Coconut Oil
  • Extra Virgin Oil
  • Avocado
  • Nuts and Seeds
  • Poultry
  • Salmon
  • Grass Fed Beef and Game
  • Garlic, Chives
  • Leeks And Scallions (spring onions)

Other foods that you should ensure are regulars in your diet are citrus fruits, and herbs such as thyme, turmeric and oregano.

aromatase supplements

Natural Supplements That Help Control Aromatase

We are fortunate that nature has been very kind to us, in that she has given us a number of natural compounds that when taken in supplement form are proven to help to reduce the effect of aromatase. 

This allows us to retain more of our natural testosterone.

Ingredients such as Nettle Extract, DIIM (Diindolylmethane) and Luteolin are amongst the best anti aromatase ingredients of all, and these can usually be found in the best testosterone boosting supplements.

(Last Updated On: August 9, 2018)

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The information in this website is for advice and guidance only. It is based on my own intensive research and personal experiences, and is not intended in any way to replace professional medical advice, or to diagnose or treat any health conditions. All rights reserved.