The Claim

Carbohydrate refeeding after prolonged low-carbohydrate intake restores glycogen stores and supports serotonin synthesis.

Source: This 2-Day Meal Plan Got Me to 9% Body Fat (here’s what I ate)

What the research says

Roughly balanced

Support and challenge are close. The picture may shift as more studies come in.

Supports
6score
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.

How it works
1 study reviewed
In plain English

After a long period of low-carbohydrate eating, consuming carbohydrates again increases glycogen levels and maintains serotonin production.

See the scientific wording

Carbohydrate refeeding after prolonged low-carbohydrate intake restores glycogen and supports serotonin synthesis.

Why this might work

After a long period without carbs, the body runs low on stored energy in the liver and has less tryptophan available to make serotonin. Eating carbs again triggers insulin release, which clears other amino acids from the blood, letting more tryptophan enter the brain. The brain uses this tryptophan to make more serotonin, while the liver quickly stores the carbs as glycogen for energy.

Verified mechanismbased on 4 studies

What the research says

1 study
  1. Study: Liver glycogen in man--the effect of total starvation or a carbohydrate-poor diet followed by carbohydrate refeeding.

    After eating very few carbs for a long time, eating carbs again quickly fills up the liver's energy storage (glycogen), which the study proved. But it didn't check if serotonin (a mood chemical) went up.

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.