Lab studies that give people pure fructose or pure glucose don’t reflect what people actually eat — we usually consume sugar as table sugar or corn syrup, which are mixtures, so those lab results don’t apply to real life.

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Evidence from Studies

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Added sugars and risk factors for obesity, diabetes and heart disease

Narrative Review

2016 Mar

The study says comparing pure fructose and pure glucose is like studying apples and oranges separately when people usually eat them together in sugar—so those lab studies don’t tell us what happens when people eat normal sugary foods.

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According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Source Study

Added sugars and risk factors for obesity, diabetes and heart disease

Score: 1

DOI: 10.1038/ijo.2016.10

Similar Assertions

Eating normal amounts of table sugar or corn syrup in your food and drinks doesn’t make you more likely to get overweight, diabetes, or heart disease than eating the same number of calories from other carbs like bread or pasta.

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73%

Scientists often give animals way more sugar than people normally eat—sometimes more than half their calories—and use pure fructose, which isn’t how humans usually consume sugar. So, the results from these animal studies might not apply to real human diets.

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70%