Noodles: the salt is the story

Salt is the most consistent thing we know about noodles, though it is not the best evidenced. The strongest single piece of evidence on this page is about iron fortification. Instant noodles sold in Thailand carried a median 1750 mg of sodium per 100 g in 2021, a figure read off product labels rather than measured in a laboratory. That is down 11.6 percent from 1980 mg in 2018, and it is still more than twice the WHO global benchmark of 800 mg per 100 g for this category. Per 100 g means per 100 g of product. It is not a packet and it is not a bowl. We have no weight for a standard packet in our data, so nobody here can turn that median into what one packet puts in front of you. The spread between packets stayed wide across all three surveys, so the number on the one in your hand can sit far from that median, and all three surveys were the Thai market. A review of 15 dietary surveys in 12 low and middle income countries put instant noodles in the same group of major salt sources as bread and processed meat. The other thing worth knowing before you read any further: the noodles that did well on blood sugar in trials were mostly built for the trial. The pea flour noodle with a glycaemic index of 50.4 came out of a laboratory extruder. The wheat noodle that lowered the 2 hour glucose area by 3.4 percent was made to 45 percent amylose on purpose. Those are recipes, and you cannot buy either of them by asking for noodles at a shop.

The numbers, per 100 g

How much is actually in it

• Label sodium in instant noodles sold in Thailand fell 11.6% between 2018 and 2021, from a median 1980 to 1750 mg per 100 g of product, and the spread between products stayed wide. — 788 instant food products surveyed in Thailand across three label surveys, 2018 to 2021 (n = 788 products) Evidence C source
  Median sodium 1980.0 mg/100 g (IQR 1353.8 to 2542.9) in 2018 against 1750.0 mg/100 g (IQR 1289.1 to 2267.3) in 2021, p = 0.02

What your body absorbs

• Noodles extruded from yellow pea flour alone measured a glycaemic index of 50.4, which is the low band, in a randomised double blind test on 12 adults. — 12 adults, yellow pea noodles against pressurised steamed white rice as the reference food (n = 12) Evidence B source
  Glycaemic index 50.4 for yellow pea noodles; rapidly available glucose was lower than white rice for every legume noodle tested

What cooking and storage change

• Noodles made from wheat flour with 45% amylose lowered the 2 hour blood glucose area by 3.4% against 15% amylose noodles in 12 healthy adults aged 20 to 26. — 12 healthy adults aged 20 to 26, BMI 18.3 to 23.5, 180 g noodle meals a week apart (n = 12) Evidence B source
  Glucose AUC 640.4 vs 662.9 mmol/L/min, a 3.4% reduction, p = 0.021

What it does to your health

• A 320 kcal breakfast of high protein instant ramen noodles cut the next meal by 94 kcal, 95% CI 8.63 to 179.75 kcal, compared with standard instant ramen of the same energy in 25 healthy adults aged 25 to 45. — 25 healthy adults aged 25 to 45 with BMI 20 to 30, two test days, double blind crossover (n = 25) Evidence B source
  -94 kcal at the ad libitum lunch, 95% CI 8.63 to 179.75 kcal, p < 0.04; appetite score itself did not differ
• An overview of 75 systematic reviews of randomised trials found that iron fortified noodles and condiments may raise haemoglobin and lower the risk of anaemia in mixed age populations. — 75 systematic reviews of randomised controlled trials covering infants to adults, searched to August 2020 (n = 75 reviews) Evidence A source
  Direction only: higher haemoglobin concentration and lower anaemia risk; the overview reports no pooled size for the noodle comparison

Safety, limits and interactions

• Eating ramen with a perforated spoon cut the salt eaten with the meal from a median 3.1 g to 2.4 g in 35 male students and from 3.0 g to 2.2 g in 34 female students. — 69 university students (35 men, 34 women) eating ramen in a university cafeteria, randomised crossover (n = 69) Evidence B source
  Men 2.4 g vs 3.1 g salt, p = 0.022; women 2.2 g vs 3.0 g, p < 0.001; satiety and palatability unchanged
• In one hospital outbreak in South Korea, cold buckwheat noodles were the probable vehicle for enterotoxigenic E. coli, with an adjusted odds ratio of 3.00 across 77 symptomatic cases, and the organism was never recovered from the food. — 1606 hospital employees, 77 meeting the symptomatic case definition, plus 61 food handlers screened (n = 1606) Evidence C source
  Adjusted OR 3.00, 95% CI 1.34 to 6.55, p = 0.006; 13 of 61 food handlers were asymptomatic carriers

What people believe that the data does not support

• A systematic review of 15 dietary surveys in 12 low and middle income countries listed instant noodles among the major dietary sources of salt, alongside bread and processed meat. — 15 studies from 12 low and middle income countries, screened from 3207 records (n = 15 studies) Evidence C source
  Ranking of food sources, not an effect size: instant noodles appear in the major source group
• Even after the fall, the 2021 label median of 1750 mg sodium per 100 g of product in Thai instant noodles was more than twice the WHO global benchmark for noodles and similar products. — 788 instant food products surveyed in Thailand, compared with the WHO global sodium benchmarks (n = 788 products) Evidence C source
  2021 median 1750 mg/100 g against a WHO global benchmark of 800 mg/100 g for the noodle category

Who this works differently for

• In 8 patients with reflux disease and irritable bowel syndrome, wheat noodle meals produced 5.0 transient lower oesophageal relaxations in the 2 hours after lunch against 1.9 after rice noodle meals. — 8 adults (6 women, mean age 57) with overlapping GERD and non-constipation IBS, 250 g noodle meals at breakfast and lunch (n = 8) Evidence B source
  5.0 ± 0.7 vs 1.9 ± 0.3 relaxations per 2 h, p = 0.01, with higher breath hydrogen and higher bloating and regurgitation scores after wheat

The bottom line

If you eat ramen, leave the soup in the bowl. That is the one instruction here with a trial behind it. Sixty nine Japanese university students ate the same ramen twice in their own cafeteria, one meal each way, once with a perforated spoon and once with a normal one. The salt they took in with the meal fell from a median 3.1 g to 2.4 g in the men and from 3.0 g to 2.2 g in the women. They rated the taste and the fullness the same. You do not need the spoon, you need to stop drinking the broth. A cup of cooked noodles runs about 160 g in our portion data, so a bowl is easy to underestimate. The 1750 mg per 100 g figure further up this page is a label median from the Thai market, and it counts 100 g of product rather than a packet or a bowl. Those two sets of numbers are in different units. The 3.1 g and the 2.4 g are salt eaten at one meal, and the 1750 mg is sodium in 100 g of product. Salt and sodium are two different measurements, and this page does not convert one into the other. Two other findings are real but narrower than they sound. A 320 kcal breakfast of high protein instant ramen cut the next meal by 94 kcal against ordinary ramen of the same energy, with a confidence interval running from 9 to 180 kcal, so the real effect could be close to nothing. The thing that trial set out to measure, appetite, did not move at all. It was one morning in 25 people. Iron fortified noodles sit on the strongest evidence on this page, an overview of 75 systematic reviews, and it reports direction only: haemoglobin up, anaemia risk down, with no pooled size for noodles. The iron is doing that work. The noodle is the delivery van. Be careful in three places. In 8 people who have both reflux and irritable bowel, wheat noodle meals triggered 5.0 transient relaxations of the lower oesophageal valve in the two hours after lunch against 1.9 after rice noodle meals, with more bloating and more regurgitation. Eight patients is a hint about a clinical group, not a fact about anyone else. In one South Korean hospital outbreak, cold buckwheat noodles were the probable vehicle for enterotoxigenic E. coli across 77 cases, adjusted odds ratio 3.00, and the organism was never recovered from the food itself. That is one outbreak of one cold dish, and it does not make a rule about cold noodle dishes in general. Third, the egg. Most of the USDA rows on this page are egg noodles, and one of the others is buckwheat soba. If eggs, or buckwheat, are a problem in your house, read the ingredient list instead of the word noodle. That one comes from our own table above rather than from a study. Now the holes, because they are large and nobody writes them down. Nobody has measured whether you absorb minerals from noodles any differently than from other grain food. The USDA retention tables, which tell us what boiling does to nutrients in other foods, have no noodle row at all, so we cannot tell you what your pot does to the nutrients in the packet. There are no Foundation Foods samples for noodles either, which means the USDA figures on this page come without a measured spread behind them. We also have nothing on noodles and medicines. Our interaction data is filed by nutrient rather than by food, so for a product it is empty by construction, and that is a gap in our tooling rather than evidence that no interaction exists. Neither the United States nor the European Union register carries a single health claim naming noodles.

Sources

1. nood-r2-09 · cross-sectional product label survey
   Median (IQR) sodium content decreased by 11.6%, from 1,980.0 (1,353.8-2,542.9) mg/100 g in 2018 to 1,750.0 (1,289.1-2,267.3) mg/100 g in 2021
   Prev Chronic Dis (CDC), 2026 · checked 2026-09-23
2. nood-r2-03 · randomised double-blind trial in adults
   The results show that noodles made from yellow pea have a low glycemic index (50.4), and have potential as a functional staple food.
   Nutrients, 2020 · checked 2026-09-23
3. nood-r2-02 · randomised crossover trial in healthy adults
   The total area under the blood glucose concentration curve after consumption of high amylose noodles with 45% amylose was 640.4 ± 9.49 mmol/L/min, 3.4% lower than consumption of low amylose noodles with 15% amylose (662.9 ± 9.49 mmol/L/min), p = 0.021.
   Nutrients, 2020 · checked 2026-09-23
4. nood-r2-01 · randomised crossover trial in adults
   HP led to greater reduction of the desire for prospective food consumption and reduced lunch-time energy intake compared to SP (-94kcal; 95% CI: 8.63, 179.75 kcal; p < 0.04).
   Nutr Diabetes, 2026 · checked 2026-09-23
5. nood-r2-06 · overview of systematic reviews of randomised trials
   Each review suggested that fortified versus non-fortified condiments or noodles, fortified (sodium iron ethylenediaminetetraacetate; NaFeEDTA) versus non-fortified soy sauce, and double-fortified salt versus control salt may increase Hb concentration and reduce the risk of anaemia.
   Cochrane Database Syst Rev, 2021 · checked 2026-09-23
6. nood-r2-04 · randomised crossover trial in students
   Among male participants, the median (25th, 75th percentiles) soup intake was 95.0 (77.0, 236.0) g with the perforated spoon and 141.0 (93.0, 347.0) g with the regular spoon (P = 0.004); salt intake was 2.4 (2.1, 4.9) g and 3.1 (2.4, 6.9) g (P = 0.022), respectively.
   Front Public Health, 2026 · checked 2026-09-23
7. nood-r2-08 · outbreak investigation, case-control analysis
   Cold buckwheat noodles were identified as the probable vehicle in multivariable analysis (adjusted OR=3.00, 95% CI 1.34-6.55, p = 0.006).
   J Infect Public Health, 2026 · checked 2026-09-23
8. nood-r2-07 · systematic review of cross-sectional dietary surveys
   The major sources of dietary salt were breads, meat and meat products, bakery products, instant noodles, salted preserved foods, milk and dairy products, and condiments.
   Int J Environ Res Public Health, 2019 · checked 2026-09-23
9. nood-r2-10 · cross-sectional product label survey
   The 2021 median sodium level of 1,750 mg/100 g was more than double the WHO global benchmark for noodles and similar products
   Prev Chronic Dis (CDC), 2026 · checked 2026-09-23
10. nood-r2-05 · randomised crossover trial in GERD patients
    Wheat ingestion was significantly associated with more frequent TLESR after lunch than rice (5.0 ± 0.7 vs. 1.9 ± 0.3 times/2 h, p = 0.01).
    Nutrients, 2022 · checked 2026-09-23