descriptive
50
0
When people don't eat for 3 days, their body starts using more fat for energy, which can be seen in a drop in the respiratory exchange ratio from 0.80 to 0.72.
Scientific Claim
During acute starvation in healthy young adults, respiratory exchange ratio decreases progressively from 0.80 to 0.72 over 72 hours, indicating a shift toward greater fat utilization for energy.
Original Statement
“RER fell progressively (Fig. 2; time effect P < 0.001, ANOVA).”
Evidence Quality Assessment
Claim Status
appropriately stated
Study Design Support
Design supports claim
Appropriate Language Strength
association
Can only show association/correlation
Assessment Explanation
The study design (cohort study) can describe associations between starvation and physiological changes. The claim uses 'decreases' which appropriately reflects the observed association.
Evidence from Studies
Supporting (1)
50
50
The cardiovascular, metabolic and hormonal changes accompanying acute starvation in men and women
Cross-Sectional Study
Human
1994 MarContradicting (0)
0
No contradicting evidence found