Giant Knotweed Benefits
Feb 02, 2021

The most important health benefits of Giant Knotweed its ability to prevent and treat cognitive disorders, improve heart health, lower your risk of cancer, reduce gastrointestinal distress, lower blood pressure, maintain proper insulin levels, and many other unique benefits.

What is Japanese Knotweed?

Japanese knotweed has been used as a spring vegetable for centuries in Asian cultures and is used for various agricultural and bee-keeping activities. The plant is so highly praised because of its high content of one particular chemical, resveratrol. Studies have shown that the roots of the plant contain a much higher level of resveratrol than the leaves and the stems.

Japanese knotweed is native to East Asia, primarily Japan, Korea, and China, and is scientifically known as Fallopia japonica. It is a large, perennial herbaceous plant that has become an important cultural, medicinal, culinary, and ceremonial herb for a number of Asian cultures over the centuries. In other countries of the world, Japanese knotweed is sometimes considered invasive, as it is quite hardy and can grow quickly; it can also be found in North America and Europe, as well as in limited amounts in Australia. In certain countries and regions, billions of dollars have been spent trying to control the outbreaks of Japanese knotweed, as it can easily overtake other crops and vegetation.

Knotweed is an herb used for cough, cold, and many respiratory disorders.

While a lot of debate and study is still ongoing, supplemental and nutritional consumption of Japanese knotweed does seem to hold significant potential. Now, let’s take a closer look at some of the health benefits of Japanese knotweed.

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Health benefits of Giant Knotweed include:

Cognitive Impact

One of the most well known and widely relied on benefits of Japanese knotweed is its apparent effect on cognitive disorders, like Alzheimer’s disease and dementia. This is primarily due to the resveratrol content of the herb, which is the same for most of the plant’s benefits. Resveratrol has shown a measurable preventative effect against neurodegenerative processes that can affect neural pathways (RS Turner et al., 2015). Just as antioxidants can eliminate plaque and neutralize free radicals that can slow mental function and cause deterioration, resveratrol can keep brain pathways energized and in use, preventing those tragic conditions. [4]

Heart Disease

When one consumes high-fat, rich foods, there is a much greater chance of developing heart disease and cardiovascular complications, such as high cholesterol. However, the resveratrol in Japanese knotweed has been known to counter that, due to its resveratrol content [5]. In France, where red wine is drunk in high concentrations (and thus, large amounts of resveratrol are consumed), heart conditions are very uncommon, despite the high-fat and rich diet that many people enjoy there. By adding knotweed to your diet, you can benefit from the same heart-protective qualities!

Blood Pressure

Early research on resveratrol’s effect on the heart primarily centered on a reduction in fat, there have also been encouraging results regarding resveratrol’s ability to modulate blood pressure. By reducing strain and stress on the heart, lower blood pressure can significantly lower the risk of heart attacks and strokes by keeping the arteries and blood vessels dilated, preventing blood clots. [6]

Gastrointestinal Concerns

If you are suffering from stomach issues, such as constipation, bloating, cramps, inflammation, or chronic pain, Japanese knotweed may be just what the alternative medical practitioner ordered! By adding resveratrol-rich herbs to your diet, you can significantly reduce gastrointestinal distress, and the herb also acts as a mild laxative, which can help clear out your system and get your digestive processes back to normal.

Cancer Management

Any herb that has anti-cancer potential tends to get a lot of attention, and Giant Knotweed is no exception. A 2014 research conducted by Dr. Chandra K. Singh from the Department of Dermatology, University of Wisconsin, Madison suggested that resveratrol-containing foods like raspberries, mulberries, and Japanese knotweed have been shown to afford chemopreventive as well as therapeutic effects against certain cancers. In this study, the researchers tried to gain clarity on how resveratrol-based combinations can help in cancer management and the results, though not clear enough, look promising.

Insulin Control

Over time, particularly if we have a poor diet, our body becomes less able to regulate its insulin levels, and develops “insulin resistance”. This can lead to diabetes and many other health complications, but if you add Japanese knotweed to your diet, you can effectively avoid all of that. The resveratrol in Japanese knotweed decreases insulin resistance while improving insulin sensitivity, helping in blood sugar regulation.

Word of Caution: Taking an excessive amount of Giant Knotweed can result in negative reactions, but if you follow the dosage guidelines and use the herb in moderation, the chances of an allergic reaction are small. If you are allergic to resveratrol, which some people are, you should avoid any use of this herb.

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Giant knotweed benefits for skin

Here’s how this invasive weed can make your skin much more beautiful!

Helps give skin an ageless appearance – Knotweed is a great source of resveratrol. You may have heard of this ingredient in relation to red wine and grape juice but knotweed is known to be an even more potent source of resveratrol! One of resveratrol’s known benefits is that it visibly plumps the look of skin. It helps to fight off the effects of gravity and prolongs a more youthful appearance.

Natural skin protector – Resveratrol's high antioxidant activity will naturally protect your skin from environmental stressors.

Improves the appearance of skin tone – Resveratrol, the apparent miracle ingredient, will not only re-energize the look of your skin, but it will also clarify and balance your skin’s tone, leaving it luminous and glowing.

Alleviates temporary redness or discomfort – Knotweed soothes the feeling of temporary flare ups and can lessen the appearance of occasional redness.

Japanese knotweed resveratrol side effects

Data from clinical trials indicate that daily doses of resveratrol between 20 mg and 2 g are safe and well tolerated [5–8]. For example, in a randomized placebo-controlled double-blinded clinical trial, resveratrol, given at 1 g per day for a period of 45 days in patients with type 2 diabetes, was not associated with serious side effects [9]. In patients with Alzheimer's, resveratrol, given for one year, starting at 500 mg and going up to 2 g per day, was not associated with relevant secondary effects [10]. When given at doses higher than 2 g daily (maximum 5 g/day), resveratrol is well tolerated by healthy individuals, although mild to moderate gastrointestinal symptoms, including nausea, flatulence, abdominal discomfort, and diarrhea are frequently observed.

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