Dementia preventing seasoning? Ajinomoto proposes MSG to fight age-related cognitive decline

By Guan Yu Lim

- Last updated on GMT

The company is studying and working on new seasoning products to help fight the effects of dementia ©Getty Images
The company is studying and working on new seasoning products to help fight the effects of dementia ©Getty Images

Related tags Japan Ajinomoto Msg Dementia Cognitive decline

Japan’s food seasoning giant Ajinomoto is proposing amino acids like monosodium glutamate (MSG) as a candidate to help fight dementia and is working on a new range of seasoning products to help improve cognitive health.

A survey by Japan’s Ministry of Health, Labor and Welfare's research group estimated that the dementia population will increase to 7.3 million by 2025, up from 4.62 million people in 2012, further adding that one in five people in Japan over the age of 65 will eventually develop dementia.

We previously reported that Ajinomoto will focus on food solutions to combat global health issues such as age-related functional decline​ for the next 10 years.

Daisuke Nakamiya, senior manager of global communications at Ajinomoto, told NutraIngredients-Asia​ and FoodNavigator-Asia​ the company was now conducting contract research on the potential benefits of amino acids at universities and working with local hospitals and government.

In a study published in the European Journal of Clinical Nutrition​, researchers from Tottori University and Ajinomoto’s Institute for Innovation studied the potential benefits of MSG in dementia patients.

In the study, 159 patients with dementia residing in a hospital or nursing home were separated into two groups.

Group one (n=80) was given diets with 0.26g salt (NaCl) added to each meal (3 meals/day).

Group two (n=79) was given diets with 0.9g MSG added to each meal (3 meals/day).

These additives were added to rice porridge, miso or other soups or mixed in the main dish, and the amount of sodium intake was equal in both groups. The study consisted of a 12-week intake period, followed by a 4-week follow-up period.

During the follow-up period, researchers found that the group of patients who ingested MSG showed significantly better scores on the overall cognitive ability test compared to the group of patients who ingested salt (p<0.05).

Furthermore, group two also scored significantly higher in the word recognition (p<0.05) and clock time recognition tests (p<0.01) than group one.

Nutritional status

In the same study, researchers said MSG may also improve the nutritional status in these patients. According to them, appetite loss is considered a major risk factor for dementia progression in elderly patients.

Researchers believed that the inability to taste umami decreased with age, and contribute to a lack of enjoyment of food, and overall food intake.

In this study, adding MSG increased the umami taste in food, leading to increased appetite and also increased cognitive function in elderly patients with dementia.

Ajinomoto stressed that these were preliminary results and further studies were required to demonstrate MSG’s positive impact on dementia, cognitive ability as well as food intake.

The company is also studying how branched-chain amino acids like leucine can help build muscles in the elderly, and how asparagine and glutamic acids can act as a neurotransmitter for cognitive function.

It will work with medical institutions to analyse possible links between dietary habits and declines in cognitive function using patient data.


Source: European Journal of Clinical Nutrition

“Effect of monosodium L-glutamate (umami substance) on cognitive function in people with dementia.”

Authors: Kouzuki M, et al​.

Related news

Show more

Related products

show more

Empowering Women Through the Life Cycle

Empowering Women Through the Life Cycle

Content provided by Glanbia Nutritionals | 07-Nov-2023 | Product Brochure

As discussions around female empowerment widen, and advances in women’s health access and provision accelerate, the implications for business, healthcare,...

Analyzing the unknown threat from Microplastics

Analyzing the unknown threat from Microplastics

Content provided by Agilent Technologies | 06-Nov-2023 | Infographic

Microplastics are any plastic-derived synthetic solid particle or polymeric matrix, ranging in size from 1 µm to 5 mm and insoluble in water.

Pycnogenol® Supports Cognitive Function

Pycnogenol® Supports Cognitive Function

Content provided by Horphag Research | 18-Sep-2023 | White Paper

Clinical research shows daily supplementation with Pycnogenol® may help support brain function in a variety of age groups with results showing improved...

Functional Beverage Market Insights in ASPAC

Functional Beverage Market Insights in ASPAC

Content provided by Glanbia Nutritionals | 06-Jul-2023 | Product Brochure

High growth ahead for protein beverages makes Asia Pacific (ASPAC) the market to watch. Consumer research shows new usage occasions, key consumption barriers,...

Related suppliers

Follow us


View more


Food & Beverage Trailblazers

F&B Trailblazers Podcast