The Claim

In healthy young women, consuming dinner 1 hour before bedtime is associated with a 2.3-fold higher Arousal Index and a 25.4-unit increase in Stage-Shift Index compared to consuming dinner 5 hours before bedtime, indicating increased nocturnal arousal and sleep fragmentation.

Source: Effects of later dinner timing on subsequent metabolic function and nocturnal sleep in healthy young women

What the research says

Supports is higher

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

Supports
54score
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.

Correlation
1 study reviewed
In plain English

In healthy young women, eating dinner one hour before bed is linked to more frequent awakenings during sleep and more transitions between sleep stages compared to eating dinner five hours before bed.

See the scientific wording

In healthy young women, eating dinner 1 hour before bedtime is associated with increased nocturnal arousal and sleep fragmentation, as evidenced by a 2.3-fold higher Arousal Index and a 25.4-unit increase in Stage-Shift Index compared to eating dinner 5 hours before bedtime, suggesting disrupted sleep stability.

Why this might work

Eating dinner close to bedtime causes blood sugar to stay high during the night, then drop quickly. This sharp drop activates the body's stress response, which wakes the brain briefly and causes frequent shifts between sleep stages, breaking up sleep.

Supported mechanismbased on 1 study

What the research says

1 study
  1. Study: Effects of later dinner timing on subsequent metabolic function and nocturnal sleep in healthy young women

    This study found that when young women ate dinner just one hour before bed, they woke up more often and switched between sleep stages more than when they ate dinner five hours before bed — meaning their sleep was more broken and less restful.

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.