Why is High Fructose Corn Syrup Bad?

The reason why High Fructose Corn Syrup (HFCS) is bad has to do with biochemistry. Only your liver metabolizes HFSC, and long-term fructose consumption results in Metabolic Syndrome: (Dr. Robert Lustig’s video, The Bitter Truth)

  • Obesity (BMI over 30)
  • Type 2 diabetes (high blood sugar)
  • Lipid problems (abnormal cholesterol)
  • Hypertension (high blood pressure)
  • Cardiovascular disease (coronary artery and heart) 

Furthermore, many ultra-processed products contain HFCS, such as soft drinks, which is why soda is bad for you. You find fructose in bread, buns, ketchup, salad dressing, desserts, and many other foods. Please check the ingredients on the package and avoid High Fructose Corn Syrup. 

Why High Fructose Corn Syrup is Bad spoonful of toxic HFCS
Long-term doses of High Fructose Corn Syrup are toxic.

Why High Fructose Corn Syrup is Bad for You

Fructose is associated with biochemical alterations that promote the following: (PubMed.gov)

Furthermore, the Maillard reaction may involve fructose-derived Advanced Glycation End Products (AGEs). Dr. Lustig says, “Fructose is seven times more likely than glucose to form AGEs.” Moreover, he says, “What happens on your grill (browning effect) happens in your arteries.” 

During fructose metabolism, triglycerides lead to hepatic (liver) insulin resistance and dyslipidemia. When insulin fails to regulate hepatic metabolism, it leads to excess glucose and nonalcoholic fatty liver disease. (ScienceDirect.com)

Why are you still hungry after consuming products with high fructose corn syrup?

Nonalcoholic Fatty Liver Disease

Fructose Overconsumption

Have you ever eaten too much apple pie? I have and felt nauseous afterward. Apples contain fructose and fiber. However, apple pie has loads of added sugar (sucrose is 50% fructose). Why do we overeat foods high in sugar?

Dr. Lustig says, “Fructose does not suppress ghrelin (your hunger hormone).” As a result, your brain does not recognize you consumed fructose. Thus, you eat more!

Furthermore, Dr. Lustig says, “Fructose causes your brain to think you are starving.” It’s easy to overconsume products like fruit pies high in added sugar. Thus, Big Weight Loss recommends you eat apples instead of sugary pies.

Why High Fructose Corn Syrup is Bad apples and pie

Fructose is a Chronic Toxin

Nature put the cure (fiber) in the poison (fructose). Eating whole fruits is healthy. However, the chronic consumption of fruit juice is toxic to your liver. Dr. Lustig says, “The sugar in juice causes obesity.” Moreover, “The more juice you drink, the fatter you get.” 

Consuming High Fructose Corn Syrup is bad because it’s a chronic toxin that causes the following health problems:

  • Metabolic Syndrome
  • Nonalcoholic fatty liver disease
  • Type 2 diabetes

Big Weight Loss recommends you drink water instead of fruit juices and sodas.

Healthy man with apple and bottle of water
Eat healthy whole fruits and drink water.


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