When people don't eat for 3 days, their heart rate goes up, increasing from about 62 to 69 beats per minute, with most of the increase happening within the first day and a half.
Scientific Claim
During acute starvation in healthy young adults, heart rate increases significantly from 62.5 to 69.2 beats per minute over 72 hours, with the majority of increase occurring by 36 hours.
Original Statement
“HR increased during starvation from 62.5 to 68.0 to 69.2 beats/min (time effect P < 0.001, ANOVA). The HR at 36 h was significantly greater than that at 12 h (P = 0.001), but there was no further significant increase at 72 h (P = 0.35).”
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 'increases' which appropriately reflects the observed association.
Evidence from Studies
Supporting (1)
The cardiovascular, metabolic and hormonal changes accompanying acute starvation in men and women