Vitamin K2 inhibits estrogen!

Vitamin K2 inhibits estrogen!

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Many men suffer poor erection quality and low libido.

And as I’ve been telling you for quite a long time, the problem has more to do with high estrogen in men than it does low testosterone.

Men in other cultures do extremely well with testosterone rates that the western world considers low.

But men in these other cultures have lots of children, plenty of sex, and live a long time.

They also have lower estrogen levels.

The real problem for men these days is that they have too much estrogen.

It’s also the reason why testosterone supplementation so often doesn’t work.

Testosterone supplementation is not addressing the real problem.

The real problem is that these men usually have extremely high estrogen levels.

In fact, these men often have estrogen levels that are higher than the levels of their wives.

Now we see some evidence that vitamin K2 helps to lower estrogen levels and is very valuable.

In this newsletter, I want to share two important studies that show Vitamin K2 inhibits estrogen.

It’s very difficult to get enough Vitamin K2 just from your diet.

Vitamin K is not the same as vitamin K2.

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Vitamin K is named from the German word for coagulation, for clotting of blood.

And it helps the blood clot and is produced by bacteria in the gut.

These bacteria convert the vitamin K into K2.

Like I said, it’s difficult to get a lot of vitamin K2 from food.

But cooked green leaf vegetables such as kale and collards have a generous amount of vitamin K.

And beef liver has a lot.

If you are into Japanese food, you may have tried natto, which most Westerners find pretty nauseating.

Natto consists of fermented soybeans and contains a tremendous amount of vitamin K2.

Almost all the good research on vitamin K2 is being done in Japan — possibly because of natto’s popularity there.

So now let’s get to the first study which shows how vitamin K2 lowers estrogen levels.

As expected, it is a Japanese study.

Recall that estrogen is a powerful inflammatory hormone.

Higher estrogen levels also cause your prostate to enlarge and cause cancers to grow faster.

Most men over 50 have some cancer cells already.

And higher estrogen levels simply promote the cancer cell growth and can increase the chances of having tumors.

Vitamin K2 appears to cause estrogen levels to fall.

K2 caused the inhibition of the amount of estrogen receptor alpha-binding to its target DNA.

These results suggest a possible novel role for vitamin K in modulating estrogen function.

So, what should you do now?

Well, you can take vitamin K2 in either MP4 or MK7 types.

I highly recommend MK4.

I haven’t found MK7 to be very useful myself.

You could take anywhere from 1 mg to 45 mg per day and probably quite a bit more.

45 mg a day over three doses of 15 mg each is what most of the Japanese studies use.

It is this type of dosage which will tend to lower estrogen levels pretty dramatically in the male body.

Women can take vitamin K2 as well — helps prevent osteoporosis.

You should always take vitamin K2 with some vitamin D3 and some calcium.

Vitamin K2 will help the calcium go into the bones and will help clear the arteries of plaque.

But most importantly in this study, we see that vitamin K2 is a powerful help for lowering men’s estrogen levels.



Matt Cook is editor-in-chief of Daily Medical Discoveries. Matt has been a full time health researcher for 26 years. ABC News interviewed Matt on sexual health issues not long ago. Matt is widely quoted on over 1,000,000 websites. He has over 300,000 daily newsletter readers. Daily Medical Discoveries finds hidden, buried or ignored medical studies through the lens of 100 years of proven science. Matt heads up the editorial team of scientists and health researchers. Each discovery is based upon primary studies from peer reviewed science sources following the Daily Medical Discoveries 7 Step Process to ensure accuracy.
Vitamin K2 binds 17beta-hydroxysteroid dehydrogenase 4 and modulates estrogen metabolism.

How does Vitamin K2 effect Estrogen levels?

Vitamin K2 levels do not directly affect estrogen levels in men. However, it is quite frequent that vitamin K2 levels are very low in a man while his estrogen is very high. Estrogen is often present in high levels in men who are suffering from belly fat, low libido, poor erectile function and problems such as high blood pressure, prostate inflammation, or type two diabetes.These same men often have very low vitamin K two levels. When vitamin K2 increases, estrogen levels may not actually decline but oftentimes testosterone levels can rise. This helps partially counteract high estrogen levels.Men are much better off with high vitamin K2 levels and low estrogen levels. Vitamin K2 can increase testosterone production by the Leydig cells in the testes. And this can help increase a man’s sexual libido and improve his health.

How does Vitamin K2 effect libido in men?

Vitamin K2 does not directly raise a man’s libido but it can raise testosterone levels by increasing the activity of the Leydig cells in the testes. When testosterone levels increase, a man’s libido’s concerts.Vitamin K2 also helps clear arteries of plaque and calcium deposits. It pulls calcium out of soft tissue and puts it back into the bone. This can help clear the penile erection chambers and increase nocturnal erections, or “morning wood”, and improve libido.Vitamin K2 is often very low in men who are suffering from erectile dysfunction or who are not getting routine morning wood. Vitamin K2 may be the solution to improve libido in many men.

How does Vitamin K2 mk7 effect testosterone?

Vitamin K two comes in several forms but the primary forms are MK4 and MK7..Vitamin K2 MK4  is much shorter acting than MK7. But vitamin K2 MK4 seems to be more effective in raising testosterone levels in men.MK7 may raise testosterone levels but it works over a period of days rather than hours. Vitamin K2 MK4 can work over period of hours and increase testosterone production in a man’s leydig cells in his testes.MK7 is present in high levels in certain foods although most Westerners will never eat these foods. A notable one is fermented soybeans call natto, and eaten in parts of Japan. In these parts of Japan where natto is eaten, men’s bones are stronger and their testosterone levels may be higher.

What are the best vitamins for erectile dysfunction?

 Erectile dysfunction is a increasing problem among men in the modern world. The daily stress of lives, imbalanced diet, lack of exercise and the right health information has compounded this problem. What used to be a natural side effect of age, has now been replaced by a condition which alters the sexual life of even younger adults.The alarm bells have been sounded. And true to their jobs, Advertising firms have raked up this issue to their benefit. Enter any pharmacy store or flip through your favorite magazine, and you could but realize how ‘Big claims “ and “Results based science” has further alienated us from the real cause to this problem. With changing habits and the huge shift that has happened to our eating habits and health advocacy, more and more people are looking for the quick fixes. Supplements and Vitamins fulfill this need. Supplements are currently a $30 billion industry in the U.S, with an average of 50,000 products in daily use around the whole spectrum of immunity boosters and sexual power enhancers.But, what are the best Vitamins for Erectile Dysfunction? We will look at hard evidence and scientific studies that have stood the onslaught of Advertising mania to bring to you simple and widely available solutions to the Sexual health of men.It’s Milk Milk Baby and lots of Sunshine…..Yes, the best Vitamin that tops our list is Vitamin D.According to the Institute of Medicine, the deficiency in Vitamin D is the primary reason for obesity. The average intake of Vitamin D  is recommended at 600 IU’s for Adults between 19 – 70 years of age. Sun exposure is the most natural way to increase the Vitamin D levels in the body. Other sources are Milk and products like Salmon.One another important chemical that plays a major role in erections is Nitric Oxide or NO. Nitric Oxide is made by L-Arginine which is an amino acid found in foods like red meat,poultry, fish and many dairy products. In addition to it Vitamin B3 comes second in our list of beneficial Vitamins for Erectile Dysfunction. Also termed Niacin, Vitamin B3 supplements can help maintain an erection more. The type of foods that are prominent in Vitamin B3 are turkey, Peanuts and avocado.Vitamin B9 is also considered effective in the production of Nitric Oxide and thus an important proponent to Erectile Dysfunction treatment. Also known as Folic acid, Vitamin B9 can be supplemented with a B Complex supplement or by foods like Spinach, Orange juice and with organic milk.Vitamin C also plays a major role in the nitric oxide production. The usual dosage for an average adult is 500 mg to 1000 mg daily and not only does it help maintain the Erectile firmness longer but it also has various antioxidant properties. Good sources of Vitamin C include Citrus fruits, berries, Tomatoes, Spinach and broccoli.Vitamin A is an important Vitamin for treating Erectile dysfunction issues. According to the Journal Fertility and Sterility, Carrots consist of a higher level of Carotenoids which act as powerful antioxidant compounds boosting the body with Vitamin A levels.The Mineral Zinc also plays an important role for erectile dysfunction problems. Since Low testosterone is usually considered a reason for ED issues, Zinc supplementation can boost the testosterone levels in the body. Foods that are rich in zinc include Oysters, Shellfish, Nuts and seeds. A healthy diet that is rich in Fruits and Vegetables along with a good helping of nuts and seeds can boost Nitric oxide production while keeping cholesterol levels in check.Making significant lifestyle changes also help to improve sexual performance. Some factors like Obesity, Smoking and high stress can directly affect the Erectile dysfunction issues. By taking prudent steps to minimize smoking and practicing more relaxation techniques to distress life, one can highly effect the factors that cause ED disorders. 


  1. Oestrogen is also essential for joint integrity and to enable men to get a proper erection. Please mention it’s beneficial effects in males too in order to give a balanced comprehensive article rather than vilifying it as the Hitler of hormones!
    Kind regards
    Dr M. Joshi
    MBChB MRCP PG Diploma MedEd

    • Estrogen is made by all cells in enough quantity. We need it, just as we need cortisol. But in most of us, estrogen is already too high. Thank you for your comment.

  2. Good article. The only thing I’d question is the need for calcium. Bone weakness comes from a lack of 12 minerals – magnesium, boron, copper, etc. Also, we already get too much calcium via cheese, milk, etc. There’s a good book and seminar called “The Calcium Lie”.

    • calcium, when lower than phosphorus in the diet, increases parathyroid hormone which is highly inflammatory and fibrotic and best kept lower rather than higher. That’s why I suggest higher calcium.

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