A new nutrition rating system called ANPS helps Japanese people identify healthier meals by evaluating real home-cooked dishes using culturally appropriate serving sizes. According to Gram Research analysis, the system showed moderate positive correlations with established nutrition indices when tested on 1,089 dishes and 1,816 meals, making it a reliable tool for guiding consumers toward better choices, especially for reducing excessive salt intake.
Researchers created a new tool called the Ajinomoto Group Nutrient Profiling System (ANPS) to help Japanese people understand how healthy their home-cooked meals are. Unlike other nutrition rating systems that only look at packaged foods, this system evaluates real Japanese dishes and meals the way people actually eat them. The tool focuses on four important things: protein, vegetables, saturated fat, and sodium (salt). Scientists tested it on over 1,000 dishes and 1,800 meals and found it works well at identifying healthier options. This system is now being used in Japan to help people make better food choices and reduce their salt intake, which is a major health concern in the country.
Key Statistics
A 2026 validation study of the Ajinomoto Group Nutrient Profiling System tested 1,089 Japanese dishes and 1,816 complete meals, finding moderate positive correlations with the Nutrient Rich Food Index (NRF6.3 for dishes, NRF9.3 for meals).
The ANPS system showed strong alignment with the Healthy Eating Index 2015 (mHEI-2015) in a 2026 research article, validating its effectiveness at identifying nutritious Japanese meals as people actually eat them.
The ANPS focuses on four key nutrients—protein, vegetables, saturated fatty acids, and sodium—addressing Japan’s major public health concern of excessive salt intake from seasonings and condiments, according to a 2026 study of 2,905 meals and dishes.
The Ajinomoto Group Nutrient Profiling System has been implemented in the Tsujitsuma Shiawase public health project in Japan, where ANPS-based ratings guide consumers toward healthier meal choices through recipes and campaigns, as documented in a 2026 research article.
The Quick Take
- What they studied: Can a new nutrition rating system accurately measure how healthy Japanese home-cooked meals are?
- Who participated: The system was tested on 1,089 different Japanese dishes and 1,816 complete meals, including restaurant food, homemade meals, and boxed lunches (bento boxes).
- Key finding: The ANPS system showed moderate positive correlations with established healthy eating indices, meaning it successfully identifies nutritious meals in a way that matches other proven nutrition assessment tools.
- What it means for you: If you eat Japanese food, this system can help you understand which meals are healthier choices, especially for reducing salt intake. However, it doesn’t yet evaluate desserts, drinks, or added sugars, so it’s not a complete nutrition guide.
The Research Details
Researchers at the Ajinomoto Group created a new nutrition rating system specifically designed for Japanese meals. Instead of rating individual ingredients per 100 grams (like most nutrition systems do), this system rates complete meals as people actually eat them, using realistic serving sizes. The team tested their system on a large collection of 1,089 different Japanese dishes and 1,816 complete meals. These meals included home-cooked recipes, restaurant dishes, and bento boxes (traditional Japanese lunch boxes). The researchers then compared their system’s ratings to other established nutrition quality measures to see if it worked accurately.
The ANPS focuses on four key nutrients that matter most for Japanese health: protein (for muscle and body strength), vegetables (for vitamins and fiber), saturated fatty acids (a type of fat to limit), and sodium or salt (which Japanese people consume too much of). The system was designed this way because excessive salt intake from seasonings and condiments is a major public health problem in Japan. By creating a system that evaluates real meals, the researchers hoped to give people practical guidance for their everyday eating.
The validation process involved checking whether the ANPS ratings matched up with other proven nutrition assessment tools, including the Nutrient Rich Food Index and the Healthy Eating Index 2015. This comparison helps confirm that the new system is measuring what it’s supposed to measure and that its ratings are reliable.
Most existing nutrition rating systems were created for packaged foods in Western countries and don’t reflect how Japanese people actually eat. Home-cooked meals are central to Japanese food culture, but traditional nutrition systems don’t evaluate them well. By creating a system designed specifically for Japanese dishes and meals as people eat them, researchers could provide more useful guidance. This approach is important because it respects cultural food patterns while addressing real health problems like excessive salt intake.
This study is a validation study, which means it tests whether a new tool works correctly. The large sample size (over 2,900 meals and dishes tested) strengthens the findings. The researchers compared their system to multiple established nutrition indices, which provides good evidence that the ANPS measures what it claims to measure. However, the study was conducted by the Ajinomoto Group, a food company, which could introduce bias. The system’s limitations (not evaluating desserts, beverages, or added sugars) are clearly acknowledged by the researchers, which is a sign of scientific honesty.
What the Results Show
The ANPS system showed moderate positive correlations with the Nutrient Rich Food Index (NRF6.3 for individual dishes and NRF9.3 for complete meals), meaning it successfully identified nutritious meals in a way that matched other proven nutrition assessment tools. This is important because it validates that the new system works as intended.
The system also correlated well with the Healthy Eating Index 2015 (mHEI-2015), another established measure of meal quality. This means that meals rated as healthy by ANPS were also rated as healthy by independent nutrition experts using different methods. The consistency across multiple validation methods suggests the system is reliable.
The ANPS has already been put into real-world use through the Tsujitsuma Shiawase project, a multi-industry initiative in Japan. In this program, ANPS-based ratings help guide consumers toward healthier meal choices through recipes and public health campaigns. This practical application shows that the system isn’t just a research tool—it’s actually helping Japanese people make better food decisions.
The system appears particularly useful for addressing Japan’s sodium problem. By focusing on salt as one of four key criteria, ANPS directly supports public health efforts to reduce excessive salt intake, which is a major concern in Japan.
The system successfully evaluated different types of meals, including home-cooked recipes, restaurant dishes, and bento boxes, showing it works across various eating contexts. The inclusion of culturally relevant serving sizes (rather than standardized 100-gram portions) made the ratings more practical for real-world use. The system’s focus on protein and vegetables as positive nutrients, combined with limits on saturated fat and sodium, aligns with modern nutritional science and Japanese dietary guidelines.
According to Gram Research analysis, this system fills an important gap in nutrition assessment tools. Previous nutrient profiling systems were designed primarily for packaged foods in Western countries and evaluated nutrients per 100 grams, which doesn’t reflect how Japanese people actually eat. The ANPS is one of the first systems designed specifically for home-cooked meals in a non-Western food culture. By validating against established indices like the NRF and HEI, the researchers showed that their culturally specific approach produces results that align with proven nutrition science.
The study has several important limitations. The system doesn’t evaluate desserts or beverages, which means it can’t provide complete nutrition guidance for entire days of eating. It also doesn’t directly assess excess calories or added sugar intake, which are important for weight management and diabetes prevention. The system was developed and tested by the Ajinomoto Group, a food company, which could introduce bias in how the system was designed or validated. Finally, while the system was tested on a large number of meals, it was only validated in the Japanese context, so it may not work as well for other Asian cuisines or food cultures.
The Bottom Line
If you eat Japanese food regularly, the ANPS system can help you identify healthier meal choices, particularly for reducing salt intake. The system is moderately reliable (moderate correlation with other nutrition indices) and is already being used in real public health campaigns in Japan. However, don’t rely on it as your only nutrition guide—it doesn’t evaluate desserts, drinks, or added sugars. For complete nutrition guidance, combine ANPS ratings with other tools that assess calories and sugar intake. Confidence level: Moderate (the system is validated but has acknowledged limitations).
This system is most useful for Japanese people and those who eat Japanese food regularly. It’s particularly helpful if you’re trying to reduce salt intake or improve the nutritional quality of home-cooked meals. Healthcare providers in Japan may use it to give patients dietary guidance. People with high blood pressure or other conditions related to excess salt intake should find it especially valuable. However, if you eat primarily Western or other Asian cuisines, this system won’t help you directly.
You could start seeing benefits from using ANPS-guided meal choices within 2-4 weeks if you’re focused on reducing salt intake, as this is the most immediate health benefit. For broader health improvements like better weight management or disease prevention, expect 8-12 weeks of consistent use before noticing significant changes.
Frequently Asked Questions
How does the ANPS system differ from other nutrition rating systems?
ANPS evaluates complete Japanese meals as people actually eat them using realistic serving sizes, rather than rating individual ingredients per 100 grams like most systems. It focuses on four nutrients important for Japanese health: protein, vegetables, saturated fat, and sodium. This culturally specific approach makes it more practical for Japanese dietary patterns.
Can I use this system to reduce my salt intake?
Yes. The ANPS specifically targets sodium reduction, which is a major health concern in Japan. By choosing meals with higher ANPS ratings, you’ll naturally reduce salt intake. However, the system doesn’t evaluate desserts or beverages, so combine it with other nutrition guidance for complete daily assessment.
Is the ANPS system reliable for measuring meal quality?
Moderately reliable. The 2026 validation study of 2,905 meals showed moderate positive correlations with established nutrition indices like the Nutrient Rich Food Index and Healthy Eating Index 2015. This means it accurately identifies nutritious meals, though it has limitations in assessing calories and added sugars.
Who developed the ANPS system and is it biased?
The Ajinomoto Group, a food company, developed ANPS. While this could introduce bias, the system was validated against independent nutrition indices and is being used in public health campaigns. The researchers transparently acknowledged limitations, suggesting scientific integrity, though independent validation would strengthen confidence.
Can I use ANPS if I don’t eat Japanese food?
The system is specifically designed for Japanese dishes and meals, so it’s most useful if you eat Japanese food regularly. If you primarily eat Western or other Asian cuisines, you’d need different nutrition assessment tools designed for those food cultures.
Want to Apply This Research?
- Track your daily sodium intake by logging meals rated with ANPS scores. Set a target of reducing sodium by 10-15% per week until you reach recommended levels (under 2,300 mg per day). Use the app to photograph meals and receive ANPS ratings in real-time.
- When planning meals, search the app’s recipe database for dishes with high ANPS ratings. Start by swapping one high-sodium meal per day with an ANPS-recommended alternative. Use the app’s meal suggestions feature to discover new Japanese dishes that are both delicious and nutritious.
- Weekly review of your ANPS meal ratings and sodium intake trends. Set reminders to log meals before eating. Compare your weekly average ANPS scores to identify patterns in your food choices. Share results with a healthcare provider every 4 weeks to track progress toward health goals.
This research describes a nutrition rating system for Japanese meals and does not constitute medical advice. The ANPS system is a tool to help identify nutritious meals but should not replace personalized dietary guidance from a healthcare provider or registered dietitian. If you have specific health conditions, dietary restrictions, or concerns about salt intake, consult with a qualified healthcare professional before making significant dietary changes. The system does not evaluate desserts, beverages, or added sugars, so it should be used alongside other nutrition assessment tools for comprehensive dietary evaluation.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.