Before the volunteers were allowed to swallow the heads of LEGO figures, they're in for three days, keep a diary, where he recorded the time of defecation and the quality of the chair (in accordance with the Bristol scale).
The results were published in the December issue of the Journal of Paediatrics and Child Health, with the hope of reassuring parents who worry about their kids eating these small toys.
So how long does it take for a swallowed Lego head piece to leave your body? The "Stool Hardness And Transit" (SHAT) score, which measured the firmness of their stools, and the "Found And Retrieved Time" (FART), to see how long it took for the object to pass.
Six paediatricians from the Royal hospital in London chose to voluntarily swallow the heads of LEGO-men, to see how quickly small items that often swallow children pass through the gastrointestinal tract.
According to Arse, sorry, Ars Technica, they were only allowed into the study if they hadn't had surgery on their guts, had no swallowing issues, and were quite happy to go wading through their turds for little yellow heads.
On average, Lego came out from the body of 1.71 days, but one of the researchers has not found its part. "Using the Shat score, the researchers also found the consistency of their stools did not change".
In one interesting bowel moment, the study found "some evidence that females may be more accomplished at searching through their stools than males, but this could not be statistically validated". "This will reassure parents, and the authors advocate that no parent should be expected to search through their child's faeces to prove object retrieval". "I passed it on the first stool afterwards and was very relieved", she said.
"He searched through two weeks of bowel motions and couldn't find it". But if the child complains of abdominal pain, seek medical attention still stands. "That should save parents some heartache, unless that Lego head is dearly loved".