Summary of Key Points
Low-Glycemic Index (GI) foods have become popular “health trendsetters” in supermarkets and live streaming sessions, but there are many hidden issues: many products do not meet the GI labeling standards (such as honey, brown sugar, and meat products without carbohydrates); manufacturers use deceptive methods like adding fructose and fat to lower the GI value, which actually increases health risks; the testing and certification process is chaotic, lacking uniform standards, and data fraud is common; consumers also have misconceptions about low-GI foods, thinking that a low GI label means they are healthy and harmless, only to find out they are paying a “tax on their intelligence.”
1. Which products are actually “pseudo-low-GI”? They don’t qualify for the label at all!
Not all foods can be labeled as low-GI. Currently, domestic regulations allow labeling for only eight types of prepackaged foods: grains (such as rice and bread), beans, fruit products, vegetable products, nuts and seeds, dairy and dairy products, solid beverages, and meal replacement foods. The following products are simply trying to trick consumers:
- Honey/Brown Sugar: 80% of honey is sugar (fructose + glucose), with a GI value between 55-65, which is right at or above the low-GI threshold. Moreover, pure sugar contains no dietary fiber and is essentially “empty calories” just like white sugar; brown sugar has a GI value of 65-70, which is considered medium to high, making it a false label.
- Meat Products without Carbohydrates: For example, Keep’s beef crisps (with only beef and salt as ingredients, having zero carbohydrates). Since low-GI refers to the impact of carbohydrates on blood sugar, labeling these products as low-GI is completely misleading.
- Special Foods: Products like infant formula and health supplements are explicitly prohibited from being labeled as low-GI; any manufacturer that does so is violating the rules.
2. Manufacturers’ deceptive tactics: Adding fructose and fat to lower the GI, increasing health risks
Some products may meet the GI standards, but they use unhealthy methods to do so:
- Adding Fructose: Fructose has a GI value of only 23, and using it to replace sucrose can lower the GI below 55. However, fructose is metabolized in the liver and directly converts to fat, potentially leading to fatty liver over time. For example, some low-GI juices contain crystalline fructose as an ingredient, which is a typical deceptive practice.
- Adding Fat: Fat can slow down carbohydrate absorption and lower the GI, but excessive fat consumption leads to obesity. For instance, Hema’s low-GI rice crackers contain 21.2g of fat per 100g (exceeding the recommended 20g limit), and they also have high sodium content (389mg vs the recommended 300mg). Eating these “low-GI” crackers is not healthier than regular ones.
Reminder: Low GI does NOT equal low calories, does NOT mean it can lower blood sugar, and does NOT mean you can eat them freely! It’s just an indicator of the quality of carbohydrates; if the total calorie intake is high, you will still gain weight.
3. Chaotic testing and certification: Anyone can claim to have a low-GI product
Currently, low-GI certification is voluntary, with no national mandatory standards, leading to widespread confusion:
- Mixed Quality Certification Institutions: Some products do not indicate the certification agency used, while others use non-authoritative testing methods (such as in vitro tests or calculations instead of the required human blood sugar trials), and data fraud is common.
- High Testing Costs Lead to Cutbacks: Low-GI testing requires human trials, which are time-consuming and expensive. Many manufacturers save money by using cheaper, less accurate methods.
- Lack of Credibility: Different institutions have different standards, and there are misunderstandings among practitioners regarding the testing procedures; some equipment does not meet the required standards, making it difficult for consumers to distinguish between genuine and fake products.
4. Consumers should not be deceived by “healthy” labels; avoid these pitfalls
Many people make mistakes when buying low-GI foods:
1. Thinking that a label means the product is healthy: For example, low-GI rice crackers may have high fat and sodium content, and low-GI juices may contain added fructose, making them less healthy.
2. Not understanding how GI is measured: Most consumers are unaware that low-GI requires human trials and do not read ingredient lists or nutritional information, making them susceptible to marketing claims about “slow blood sugar rise” or “no burden.”
3. Willing to pay a premium for labels: Low-GI products are often more expensive than regular ones (e.g., low-GI rice may cost 10 yuan more per unit). If the product is pseudo-low-GI, the extra cost is essentially a waste of money.
Advice: When buying low-GI foods, check if they fall within the eight permitted categories, read the ingredient list to see if fructose or excess fat has been added, and look for authoritative certifications and specific GI values (e.g., ≤55).
In summary, low-GI is a useful health tool when used properly, but it can be misused by manufacturers. To avoid being deceived, learn to read labels carefully, understand the underlying mechanisms, and don’t just trust marketing claims!