Nutrition, Health Benefits and Side Effects- HealthifyMe

The fermented type of soybeans is natto. Interestingly, it’s a darkish, sticky combination with a peculiar perfume corresponding to a pungent cheese. People generally take pleasure in it as a morning dish. The pungent flavour is earthy, nutty, and barely bitter. It is a well-known delicacies in Japan. But, at the moment, it’s gaining reputation within the United States and different western nations as a result of its well being advantages.

Its well being advantages and dietary properties make it a superfood. Out of the a number of well being advantages, essentially the most important well being profit is enhancing digestive well being. However, natto’s affect on normal well being and wellness nonetheless requires a whole lot of analysis.

The HealthifyMe Note

For the , natto is boiled and fermented soybeans. Nattokinase is a pure enzyme in natto. Natto will get fermented with Bacillus subtilis. Natto can also be obtainable in complement type. Also, natto is vegan and vegetarian pleasant. 

Nutrition Facts of Natto

According to the USDA, 100 g of natto accommodates:

  • Energy: 211 kcal
  • Fat: 11 g
  • Fibre: 5.4 g
  • Sugar: 4.89 g 
  • Protein: 19.4 g
  • Carbohydrates: 12.7 g
  • Sodium : 7 mg
  • Calcium: 217 mg
  • Iron: 8.6 mg
  • Manganese: 1.53 mg
  • Vitamin C: 13 mg


In natto, there are numerous types of carbs. Each has its personal set of benefits.

Each cup of natto accommodates round 6 grams of naturally occurring sugar. Sugar present in meals is much less of a fear than sugar taken day by day as a part of the manufacturing course of (referred to as “added sugars”). As a outcome, sugar offers the physique vitality to hold out on a regular basis duties.


Fibre is one other sort of carbohydrate present in natto. When you eat a complete serving of fermented meals, you’ll get practically 9 grams. According to the USDA, adults ought to ingest 28 grams of fibre per day. Fibre consumption not solely aids digestion and regulation and has a number of different well being benefits, resembling reducing the chance of most cancers, weight problems, coronary heart illness, and diabetes. Starch, the leftover carbohydrate in natto, is damaged down to offer vitality to the mind and muscle groups.

When you eat one cup of natto, the meals’s general Glycemic Load (GI) is 9. Therefore, whereas calculating a meals’s affect on blood sugar, the glycemic load is an indicator that components in portion measurement. However, one normally eats natto with rice, which has the next glycemic index. For instance, based on the University of Sydney, a 150-gram dish of white rice with natto has a glycemic load of 24. On the opposite hand, meals with a glycemic index of 20 or extra are average to excessive glycemic values.


A one-cup serving of natto accommodates barely over 19 g of fats. Polyunsaturated fats makes up the vast majority of that fats. Polyunsaturated fat may also help reduce your danger of coronary heart illness and stroke by reducing low-density lipoprotein (LDL) ldl cholesterol. Natto additionally accommodates 4 grams of monounsaturated fats, one other “healthy” fats. Natto accommodates slightly below three grams of saturated fats.


Natto is a protein-rich meal. You’ll enhance your plant-based protein consumption by 34 grams while you drink a full cup.


Micronutrients abound in natto. A serving of natto accommodates 2.7mg of manganese, equal to 134% of the day by day required quantity. Manganese is sweet for enzyme exercise and different bodily actions resembling blood coagulation and metabolism. You’ll additionally get 15 grams of iron (84% of 1’s day by day wants), 1.2 milligrams of copper (58% of 1’s day by day wants), 201 milligrams of magnesium (50%), 1,276 milligrams of potassium (36%), 5.3 milligrams of zinc (35%), 305 milligrams of phosphorus (30%), and 15.4 milligrams of selenium (22%).


The nutritional vitamins that natto offers may also assist you to. The meal is wealthy in vitamin C, delivering over 23 mg, or 38% of the day by day necessities. Vitamin C aids within the strengthening of the immune system, the formation of collagen, and iron absorption from plant-based meals. It’s additionally an enzyme that may support within the therapeutic of free radical injury. In addition, natto has 0.3 milligrams of thiamin (19% of the on a regular basis want), 0.3 mg of riboflavin (20 per cent of your day by day requirement), vitamin B6, folate, & choline.

Natto is among the most wonderful types of vitamin Okay sources, particularly vitamin K2. Vitamin Okay is important for bone formation and blood clotting prevention. Adult girls ought to have not less than 90 micrograms of vitamin Okay per day, whereas males ought to get hold of not less than 120 micrograms per day, as per the National Institutes of Health. Over 40 mcg of vitamin Okay is in a one-cup meal.

Health Benefits of Natto

Natto has all kinds of potential well being advantages. Here are among the many most vital discoveries.

Benefits to the Gastrointestinal System

Bacillus subtilis, a particular sort of bacterium, is used to ferment natto. This stain and different micro organism strains are being researched for his or her potential to reinforce intestine well being in folks. This bacterium has probiotic properties. Probiotics are stay, useful micro organism within the digestive tract that assist shield your intestine from dangerous micro organism, support digestion, and could have further well being benefits. The complete diploma of their affect continues to be underneath investigation. 

Some research recommend that consuming natto and different fermented dairy merchandise may enhance stool frequency, significantly in constipated folks. However, extra analysis is required to know the benefits higher.

Natto Improves Bone Density

Vitamin K2, contained in natto, has proven promise in treating diabetes, most cancers, and, specifically, osteoarthritis. Research revealed in Osteoporosis International studied the results of natto consumption on the bone well being of older Japanese males. Researchers found that individuals who ingested extra natto had higher bone well being because of the vitamin Okay stage. However, based on the specialists, additional research is required to understand the hyperlink. 

Another research regarded on the consumption of natto by older girls. Over the previous three years, researchers investigated 944 elder Japanese girls for research. Women who ate extra natto repeatedly had increased bone mineral density in sure elements of the physique, such because the hip and neck. Other elements of the physique, nevertheless, remained unchanged. Surprisingly, the researchers discovered no benefit in consuming extra tofu or soybean merchandise.

Improves Cardiovascular Health

Nattokinase is certainly an enzyme that will get created throughout the fermentation of natto. It helps to scale back arterial plaque growth by performing as a organic blood thinner. In addition, Nattokinase offers cardiovascular benefits, resembling reducing the chance of coronary heart illness. Furthermore, based on numerous analysis investigations, the enzyme displays antihypertensive, anti-atherosclerotic, sterol, anti-platelet, and neuroprotective properties.

Natto Enhances Longevity

Researchers have linked nattokinase to longevity because it exhibits a big discount within the danger of heart problems. Heart illness is the world’s most vital explanation for mortality.  As per the researchers of 2018 analysis, natto consumption can considerably affect the lifespan of the Japanese folks. Furthermore, current analysis has discovered {that a} excessive natto consumption lowers the chance of general heart problems mortality and a decrease danger of ischemic coronary heart illness mortality.

Regulates Blood Pressure

Many natto analysis takes place in Japan, the place it’s widespread. However, one research included 79 folks with hypertension who lived in North America. Researchers found that nattokinase consumption was linked to decrease arterial strain in each girls and males. In addition, the outcomes gathered from girls indicated a possible lower in stroke danger.

The HealthifyMe Note

Natto has fewer antinutrients and extra probiotics in comparison with non-fermented soybeans. As a outcome, it helps your physique take up vitamins properly and is superb for intestine well being. In addition, natto is excessive in calcium and vitamin K2, which assist construct stronger, more healthy bones. Natto consumption helps forestall premenopausal bone loss as a result of menaquinone7 and isoflavones. In some instances, natto could assist with weight reduction, psychological well being, and most cancers prevention.

Potential Side Effects and Allergies Of Consuming Natto

Interference with Medicines

Certain medication could work together with soy. Several medication and drug varieties doubtlessly intrude with soy. Among them are:

  • Inhibitors of aromatase
  • Substrate medicines for cytochrome P450
  • Substrate medicines for P-Glycoprotein
  • Uridine 5′-diphosphate-glucuronosyltransferase (UGT) substrate medicines, together with tamoxifen.

If you’re uncertain in case your drug suits into such classes, go to your physician for additional data.

Blood Thinning

Since nattokinase can skinny the blood, you shouldn’t mix it with different blood thinners like aspirin or warfarin. Individuals with small vessel illness can enhance the chance of a mind haemorrhage. People with bleeding problems like haemophilia and low blood strain must also keep away from nattokinase. 

Women and Children

Concerns are looming regarding soy’s impact on girls’s well being. Some specialists imagine that soy consuming will increase the chance of creating endometrial hyperplasia. However, as per the National Institutes of Health, soy meals don’t seem to boost the prospect of creating the illness. Furthermore, the federal government claims that consuming soy meals appears protected for girls who’ve had most cancers or are liable to creating breast most cancers. However, kids, pregnant girls, or breastfeeding moms should keep away from natto as a result of a scarcity of proof.


Antinutrients in soybeans are a supply of fear for sure folks. These are substances that forestall vitamins from being absorbed. Antinutrients may also produce bloating and fuel within the gastrointestinal tract. The identify “antinutrient” is misleading as a result of they solely have an effect when ingested in important quantities. Antinutrients in meals additionally get lowered throughout the fermenting course of.


The Centres for Disease Prevention and Control have recognized eight important meals allergy symptoms. One of them can be soy. Dairy, egg, peanuts, tree nuts, grain, fish, or crustacean shellfish are the others. Those who’re allergic to soy ought to keep away from natto. Adults could expertise itching, hives, eczema, irritation of lips, mouth, or throat, chest tightness or hassle respiratory, wheezing, dizziness, fainting, and, in extreme instances, anaphylaxis to the Cleveland Clinic. As per the National Institute for Allergy and Contagious Diseases, kids experiencing soy allergy symptoms could endure frequent vomiting, diarrhoea, and a failure to amass weight or peak.

The HealthifyMe Note

Natto has unintended effects on sure folks. For instance, folks with bleeding problems, who’re on blood thinners, folks with low blood strain and on antihypertensive medication should keep away from natto. Also, two weeks earlier than surgical procedure, you could cut back its consumption to make sure no danger of extreme bleeding.

Natto Recipe

You should buy natto from supermarkets or make it at dwelling with this recipe.

Prep: 1 hr

Cook: 24 hrs

Yield: 6 cups


  • Soybean: 2 cup
  • Water: 3 tbsp
  • Natto starter tradition: 1 packet


  • To put together the soybeans for fermentation, wash them and soak them in 6 cups of water for 9 to 12 hours (a extra prolonged soaking interval is best in colder months).
  • Drain the soaking water from the soybeans. Fill an enormous saucepan midway with water and cook dinner the beans for 2-3 hours, checking each half hour or so. You need them to be delicate however not mushy in order that the spores have sufficient moisture to ferment, however the completed product continues to be onerous.
  • To sterilise a colander, cooking spoon, and casserole dish, rinse or submerge them in scorching water.
  • Drain the cooked beans in a sterile colander and switch them to a sterilised casserole dish. Preheat the oven to 100 levels Fahrenheit by turning on the sunshine.
  • 3 tbsp heated and chilled (for sterilising) water, mixed with natto powder. Pour the natto spore package deal over the beans whereas they’re nonetheless heated. Then, utilizing the sterilised spoon, gently stir the beans.
  • In the casserole dish, unfold the beans in a 1-inch layer.
  • Cover the casserole dish tightly with aluminium foil. Then, 1″ aside, poke holes within the foil with a pin.
  • Allow the natto to ferment for 22 to 24 hours in a coated casserole dish within the oven, dehydrator, or different hotter. Also, hold the temperature fixed at 100 levels F. You know they’ve completed fermenting while you discover a white layer on the beans and odor an ammonia-like odour.
  • Allow 2 hours for the Japanese natto to chill at room temperature. For optimum flavour and stringiness, take away the aluminium foil and hold it in sealed containers within the fridge in a single day.


Natto is a fermented soybean product. Fibre, probiotics, vitamin K2, and nattokinase are all present in natto. This mixture could decrease ldl cholesterol and blood strain ranges whereas reducing the chance of coronary heart illness. Natto is especially wholesome since its soybeans endure fermentation, selling probiotic micro organism. In comparability to non-fermented soybeans, natto has fewer antinutrients and extra probiotics. As a outcome, it helps your physique take up vitamins extra rapidly and eliminates disagreeable abdomen signs. 

Natto is excessive in calcium and vitamin K2, which assist construct stronger, more healthy bones. In some instances, natto could assist with weight reduction, psychological well being, and most cancers prevention. More analysis, nevertheless, is required. In addition, folks with thinning blood treatment or soy allergy ought to seek the advice of a health care provider earlier than taking natto.

Frequently Asked Questions (FAQs)

Q. How a lot natto ought to I eat day by day?

A. There aren’t any normal requirements for utilizing nattokinase appropriately. Even although most producers advise not more than 2,000 FU day by day, dosages ranging as much as 3,000 FU have already been administered efficiently for greater than 26 weeks. In distinction to dietary supplements, nattokinase could also be obtained by together with natto in your food regimen.

Q. Is natto good in your pores and skin?

A. Natto accommodates linoleic acid, fibre, and lecithin, which support digestion and blood purification. Natto can also be a supply of vitamin PQQ, a dietary vitamin that’s needed for holding wholesome and engaging pores and skin. In addition, blood cleaning is essential for sustaining good pores and skin. Natto could accomplish each.

Q. Is natto a Superfood?

A. Natto has historically been a mainstay of the Japanese food regimen and may also be known as a “superfood” due to its low-calorie and excessive dietary content material. However, regardless of its reputation in Japan, natto’s harsh flavour, pungent odour, and sticky texture divide opinion.

Q. Is natto good for intestine well being?

A. Yes, it’s useful to your digestive system.

Natto is excessive in probiotics, which assist to enhance intestinal well being. According to analysis, having the right abdomen micro organism can support digestion and deal with different issues.

Q. Is it OK to eat natto day by day?

A. Most folks can devour natto, however these on blood-thinning drugs or who’ve thyroid points ought to test their physician earlier than including it to their food regimen.

Q. Is natto anti-ageing?

A. Nattokinase, present in natto, has a excessive amount of vitamin K2, an efficient pure anti-ageing agent that helps improve a person’s normal pores and skin well being.

Q. Is natto good for hair?

A. Natto is sweet in your hair and pores and skin. Nattokinase has been linked to metabolism and anti-ageing. Natto Lecithin – Prevents thrombus by holding the blood skinny. It additionally protects in opposition to myocardial and mind infarctions.

Q. Can I eat natto at evening?

A. For nattokinase to enter the system effectively, it should go via the abdomen’s acidic surroundings in a good size of time. As a outcome, the optimum time to devour natto can be on an empty stomach.

Q. Does natto enhance estrogen?

A. In black soybean natto, the amount of aglycone daidzein and genistein isoflavones is extra important than in unfermented black soybean. Daidzein isoflavones have a molecular construction that mimics oestrogen, leading to robust oestrogen exercise.

Q. Is natto acidic or alkaline?

A. Natto is an alkaline fermentation, which units it other than most different fermentations. Protein is remodeled into amino acids in peptide type in alkaline-fermented meals. During the fermentation course of, ammonia is generated, which elevates the pH of natto and offers it the unmistakable ammonia scent.

Q. Does natto make you gassy?

A. No. It isn’t the form of delicate micro organism seen in yoghurt. Natto micro organism are spore-forming micro organism which might be resilient. (This is true of all Bacillus micro organism). Freezing doesn’t kill them. Even boiling received’t do away with all of them.

Q. Does natto assist you to shed extra pounds?

A. Natto is excessive in probiotics and fibre, which can assist forestall weight acquire and optimise weight discount.

Q. Does natto decrease ldl cholesterol?

A. You can decrease ldl cholesterol with natto. This fibrinolytic enzyme is especially environment friendly in dissolving thrombus (clots) via blood in human and animal experiments.

Q. Is natto a prebiotic?

A. Natto is a unbelievable prebiotic, nevertheless it’s even higher as a result of it’s wealthy in vitamin K2. Part of the rationale you’re unfamiliar with vitamin K2 is that it’s not obtainable in lots of meals. So one of the best supply is undoubtedly natto.

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