The president of Argentina, Javier MIlei, refers to left-wing politicians as “left-handed”, a word that he has popularized, and now you will be able to know more about the differences between left-handed and right-handed people and the consequences on the bones.
a new study of human skeletal remains of the wreck of the English warship ‘Mary Rose’, sunk in 1545, suggests that whether a person is right- or left-handed can influence how the chemistry of your collarbone changes as you age.
Sheona Shankland, Lancaster University (UK) and colleagues explain these findings in the journal ‘PLOS ONE’. The ‘Mary Rose’ was part of the Tudor navy during the reign of Henry VIII. On 19 July 1545 she sank while engaging French ships at the Battle of the Solent.
The ship’s artifacts and skeletal remains of the crewexcavated at the end of the 20th century, were remarkably well preserved, allowing for extensive research into the belongings, appearance and health of the crew members.
Shankland and his colleagues provide new insights into the biology of 12 men between 13 and 40 years old who went down with the ship.
This work explored how Bone chemistry may adjust in response to physical activity and agingso a person’s bone chemistry may hold clues about their lifestyle. In this case, the researchers analyzed human clavicles from the shipwreck using a non-destructive laser technique called Raman spectroscopy to reveal bone chemistry.
The analysis focused on organic proteins and inorganic mineralssince they are the two main components of bone. It revealed that, among the 12 men, mineral content increased with age, while protein content decreased, although to a lesser extent.
These age-related changes were more pronounced on the right clavicles than on the left. A greater proportion of people are naturally right-handed than left-handed.
At the time the ‘Mary Rose’ sank, left-handedness was associated with witchcraft and was therefore strongly discouraged. Therefore, assuming the crew had a right-hand preference, laterality may have affected the chemistry of their collarbones, perhaps by putting more stress on their right side during repeated ship-related activities.
“As I grew up fascinated by the ‘Mary Rose’, It has been incredible to have the opportunity to work with these remains. The preservation of the bones and the non-destructive nature of the technique allows us to learn more about the lives of these sailors, but also expands our understanding of the human skeletonrelevant to the modern world,” according to Shankland.
Jemma Kerns, co-author of the study, adds: “It has been a privilege to work with these unique human remains and precious to learn more about the lives of sailors in the 16th century and discover more about changes in bone composition as we age, something that is relevant to health today. “It’s been fascinating.”
Adam Taylor, also co-author of the work, concludes: “This study sheds new light on what we know about the clavicle and its mineralization. “The bone plays a fundamental role in connecting the upper extremity to the body and is one of the most frequently fractured bones.”
#Milei #lefthanded #people #lefthanded #influences #bone #chemistry #age
