noli.

Register

Examine@examinecomX

ICYMI - a major nutrition study that lasted 12 months and had over 600 participants comparing low-fat to low-carb was just released. They

what it claims

The choice between a low-fat and a low-carb diet has no significant impact on weight loss, and genetics cannot predict which diet will be most effective for a given individual.

holds up

This advice is based on the DIETFITS study (Gardner et al., 2018), a high-quality randomized clinical trial involving 609 participants followed for 12 months.

noli's read

This advice is based on the DIETFITS study (Gardner et al., 2018), a high-quality randomized clinical trial involving 609 participants followed for 12 months. The research concluded that there was no significant difference in weight loss between the two diets and that no interaction between genotype and diet type could be established to predict success. The key takeaway of the study is that overall diet quality (whole, minimally processed foods, low added sugars) is far more important than the distribution of macronutrients. However, it is important to note that nutritional science is evolving; more recent and specific analyses, such as those regarding certain genetic variants (e.g., APOA2), are beginning to explore nuances of "precision nutrition," although this remains complex and not applicable in general routine practice. The creator accurately presents the major conclusions of this pivotal study while avoiding overinterpretation of the results.

the sources

  1. 1Gardner CD et al. (DIETFITS) 2018
  2. 2Seidelmann SB et al. 2018
  3. 3Hu T et al. 2012
  4. 4Hall KD, Heymsfield SB, Kemnitz JW, et al. 2012
  5. 5Rolls BJ 2009

Claimed by Examine. Noli grades the claim, never the person.

Decoded by Noli · July 18, 2026 · the original post

What the graded evidence says

Evidence
B
Effect
ad libitum energy intake as a function of dietary energy density — lowering dietary energy density consistently reduces spontaneous calorie intake at matched food weight/fullness; body-fat change tracks the resulting energy balance
Measured on
general adults

What’s uncertain

Energy balance is the driver, but it's affected by many things (satiety, food quality, sleep, activity), so it's not about rigid calorie math. 'Fat-burning' or 'negative-calorie' foods are a myth.

Examine in the Register45 claims graded · solidity 94/100See their record →

More from Examine

Noli has read similar claims

Other advice in the Register that leans on the same research.

Noli, a firefly holding its lantern, at rest

Seen something like this? Send it to Noli.

Paste any health post from TikTok, Instagram, YouTube or X — or the advice itself, if someone just told you. About ten seconds, no account needed.