The Claim

Resistant starch type 2 (RS2) provides an in vivo net energy content of 2.95 kcal per gram in healthy adults aged 25–45 with normal glucose tolerance, which is significantly higher than the 0 kcal/g currently used in U.S. food labeling and represents 66–74% of the energy provided by digestible starch.

Source: The In Vivo Net Energy Content of Resistant Starch and Its Effect on Macronutrient Oxidation in Healthy Adults

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
74score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Quantitative
1 study reviewed
In plain English

Resistant starch type 2 supplies 2.95 kilocalories per gram when digested by healthy adults aged 25–45 with normal glucose tolerance, which is more than the 0 kcal/g assigned to it in U.S. food labels and equals 66–74% of the energy from regular starch.

See the scientific wording

Resistant starch type 2 (RS2) provides an in vivo net energy content of 2.95 kcal per gram in healthy adults aged 25–45 with normal glucose tolerance, which is significantly higher than the 0 kcal/g currently used in U.S. food labeling and represents 66–74% of the energy provided by digestible starch.

Why this might work

When resistant starch reaches the colon, gut bacteria break it down into energy-rich molecules called short-chain fatty acids. These molecules are absorbed into the bloodstream and used by the liver and muscles as fuel, providing calories. At the same time, they reduce the body’s use of sugar for energy and increase its use of fat, which allows more of the starch’s energy to be captured and used by the body.

Verified mechanismbased on 1 study

What the research says

1 study

  1. Study: The In Vivo Net Energy Content of Resistant Starch and Its Effect on Macronutrient Oxidation in Healthy Adults

    This study found that resistant starch gives your body about 3 calories per gram when gut bacteria break it down—not zero calories like food labels say. So, foods with this kind of starch actually give you more energy than we thought.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.