When we think about testosterone production, we usually look at ways of increasing testosterone. One of the best ways to increase testosterone is to actually lower estrogen, doing so will help increase testosterone naturally. If you are into bodybuilding (either natural or non-natural) then you should also consider estrogen blocking ingredients.

Lifters who take testosterone in high doses tend to get an upsurge in Estrogen production, this is because the body is always trying to create balance.

Effect of Increasing Testosterone

So if you suddenly increase the amount of testosterone in your body then your body will react by increasing estrogen, not to match it, but to keep the ratio the same as it was before.

When an “enhanced” lifter stops taking testosterone at the end of a cycle they will lose all the additional testosterone that they were placing in their bodies and suddenly their estrogen levels will be very high. This is why they will look for an estrogen blocker.

After A Cut

Lifters who are natural will also need estrogen blockers though. After a cut (where they have been dropping calories lower and lower to decrease their body fat) the lifter will have higher estrogen levels and lower testosterone levels, due to the very low body fat.

During A Bulk

Taking an estrogen blocker can help them build their testosterone levels back up during a bulk; in addition to this, combining it with a natural testosterone supplement is also a great idea to optimize results.

Women Decreasing Estrogen

Decreasing estrogen production is also important for women who are estrogen dominant, which can make them high-risk for breast cancer. Though obviously speaking to a doctor would be the sensible option rather than self-diagnosis!

With this in mind, we are going to concentrate on men today. Let’s take a look at four of the most popular estrogen blocking ingredients. Be sure to look for a premium anti-estrogen supplement that contains these ingredients in their formula.

Grape Seed Extract

Grape Seed Extract or GSE contains two molecules that can inhibit (block) an enzyme known as aromatase.

This is the enzyme that converts testosterone into estrogen.

A 2003 study found that GSE could prevent estrogen formation [1].

Other than being an effective estrogen-blocker, GSE has a number of other benefits, it can lower blood pressure, lower your heart rate, and lower cholesterol, making it an excellent all-round ingredient.

DIM (Diindolylmethane)

If you’ve ever struggled to see the benefits in eating your broccoli then maybe DIM levels could be your motivation.

Diindolylmethane can be found in broccoli, and can also be found in many estrogen-blocking supplements.

It prevents testosterone from being converted to estrogen by the enzyme aromatase, it helps balance hormones, and can also increase free-testosterone levels.

One thing that you should be careful with, taking too much DIM can actually reverse the process and can actually increase production of aromatase, which would lead to increased estrogen. Sticking to a dosage of around 100mg per day will be effective.

Rhodiola Root Extract

RRE is usually used as an anti-fatiguing supplement as there is a lot of evidence backing this up.

It has many beneficial effects on cognitive function, improving mood, and focus. It is also useful in combating stress.

As An Estrogen Blocker

As an estrogen blocker there is limited evidence that RRE works, in fact some studies found that it might increase estrogen, though only in small amounts.

Effect on Stress

However due to the effect that RRE has on stress, and therefore Cortisol (which can significantly lower testosterone) RRE is an effective testosterone protector.

Eurycoma Longifolia Root Extract

Eurycoma Longifolia is established as being excellent at lowering Cortisol in stressed men and women, making it another excellent testosterone protector.

It is also quite well known for treating male infertility. Part of this may be due to its effect on aromatase, according to examine.com Eurycoma Longifolia “appears to possess potent anti-estrogenic activities” [2].





[1] Eng, E., Ye, J., Williams, D., Phung, S., Moore, R., Young, M., Gruntmanis, U., Braunstein, G., Chen, S. 2003. Suppression of estrogen biosynthesis by procyanidin dimers in red wine and grape seeds. Cancer Research 1;63(23): 8516-22

[2] examine.com. 2013. Eurycoma Longifolia Jack. [ONLINE] Available at:  https://examine.com/supplements/eurycoma-longifolia-jack/. [Accessed 28 February 2017].

View More Top Supplement Lists:

Top 15 Best Pre-Workout Supplements for 2018

Top 10 Best BCAA Intra-Workout Supplements for 2018

Top 10 Best Post Workout Supplements for 2018

The Top 5 Best Natural Testosterone Boosting Ingredients

Top 10 Best Natural Testosterone Boosters For 2018

Top 10 Best Estrogen Blockers for Men in 2018

Top 10 Best Fat Burners For Men in 2018