Does Glass Noodles Really Make You Gain Weight? An In-Depth Look for the Health- and Diet-Conscious

Does Glass Noodles Really Make You Gain Weight? An In-Depth Look for the Health- and Diet-Conscious

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4 min read

Do you like glass noodles?
Japchae, deep-fried seaweed rolls, sticky rice sundae… glass noodles are a staple on Korean tables.
With their chewy texture and versatility, they’re a beloved ingredient among Koreans,
but hearing that “glass noodles make you gain weight” might make you hesitate.

Especially for those who are dieting or managing conditions like diabetes,
you might wonder, “Is it okay to eat glass noodles?”

Today on mongtable,
we’ll break down nutritional facts, glycemic index (GI), and how to eat them right
so you can enjoy glass noodles in a healthy way.


🍠 What Are Glass Noodles Made Of? Let’s Check the Nutrition Facts

Nutritional Info (per 100g) Amount
Carbohydrates 88g
Protein Less than 1g
Fat 0g
Dietary Fiber Almost none
  • Glass noodles are nearly pure carbohydrates!
  • Very little vitamins, minerals, or protein

In other words, they’re a quick and efficient source of energy,
but not exactly a nutritionally balanced food.


🔥 Are They Lower in Calories Than Ramen?

  • Not fried in oil, so generally lower than ramen
  • But due to high carbohydrate content, not exactly low-calorie
  • The amount in cup noodles (~26g) contributes little to overall calories

💡 More than the noodles themselves, how they’re cooked, seasoned, and paired matters most!


🩸 What’s the Glycemic Index (GI) of Glass Noodles?

Food Glycemic Index (GI)
Glass Noodles 96
Wheat Noodles (Somyeon) 80
  • GI 96 is considered very high, meaning blood sugar can spike quickly after eating.

⚠️ What Are the Risks of a High GI?

Group Impact
Diabetics Risk of sudden blood sugar spikes and insulin resistance
General population Satiety wears off quickly, potential weight gain

🛑 Be Cautious About These Aspects of Glass Noodles

🧪 Aluminum Detection Cases

  • In 2015, some products were found with aluminum levels exceeding European standards
  • Since then, oversight has improved — choosing reputable brands is important

👩‍⚕️ For Diabetics

  • High GI means a risk of sudden blood sugar increases
  • Talk to a doctor beforehand or consume only small portions

✅ Why You Can (Still) Enjoy Glass Noodles

Benefit Explanation
Gluten-Free Made from sweet potato starch — safe for gluten allergies
Quick Energy Great source of carbs during active periods
High Expansion Absorbs water, providing a sense of fullness even in small amounts

🥗 How to Eat Glass Noodles Healthily

✔️ Stick to Moderate Portions

  • Even one plate of japchae can contain more noodles than you think — control is key
  • For one meal, 30–50g of dried noodles is recommended

✔️ Pair with a Balanced Meal

  • Eat with protein (eggs, tofu, meat) + vegetables
  • Slows sugar absorption and helps maintain fullness

✔️ On a Diet?

  • During ketogenic diets, watch the carb intake limit (~20g/day)
  • Small occasional amounts are okay, but frequent intake is not ideal

⚖️ Summary! Who Should/Shouldn’t Eat Glass Noodles?

Recommended For Reason
Those with gluten allergies Safe due to being gluten-free
People with high activity levels Quick energy refill
Those who can balance carbs in overall diet Can be part of a balanced intake
Use Caution If Reason
You have diabetes High risk of blood sugar spikes
You’re new to dieting Hard to manage high-GI carbs
Sensitive to blood sugar changes May cause post-meal fatigue or drowsiness

🍜 Conclusion: You Can Eat Glass Noodles — But Be Smart About It

Glass noodles are by no means a bad food.
However, their health impact depends entirely on how you eat them.

✅ Key Takeaways:

  • Don’t overdo it — small portions are best
  • Pair with veggies and proteins for a balanced meal
  • Choose trusted brands

After all, eating should be enjoyable!
You can enjoy glass noodles in a delicious and healthy way 😊

Does Glass Noodles Really Make You Gain Weight? An In-Depth Look for the Health- and Diet-Conscious