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Financial Assistance. Medical Records. About Us Who We Are. Patient Stories. Get Involved. Health Alerts: Coronavirus. Health Library. Flu Information. About nine out of 10 unborn babies preferred to suck their right rather than their left thumb, and this hand preference was borne out later in life.
The brain has two hemispheres, the left and the right. Researchers into the brain once believed that handedness revealed which brain hemisphere was dominant. While some people use one hand exclusively for all tasks, others tend to swap depending on the activity; for example, some people write with their left hand but open jars with their right.
It was once believed that a right-handed person has general dominance on the right side of their body, which means their favoured foot, eye and ear are also on their right side. Many people may be right-handed but, for example, always take the first step with their left foot. Cross laterality is an ambidextrous mixture for example, being left handed but dominant in the right eye and foot.
This may cause coordination difficulties. However, some sports such as gymnastics benefit from the distribution of brain dominance. Research into cross laterality is ongoing.
Since 90 per cent of the population is right-handed, left-handed people do experience some practical problems, including:. This page has been produced in consultation with and approved by:. The abdominal muscles support the trunk, allow movement and hold organs in place by regulating internal abdominal pressure.
People who run regularly seem to be susceptible to Achilles tendonitis. Acromegaly is caused by an excess of growth hormone in adults, which causes the overgrowth of bones in the face, hands, feet and internal organs.
Exercise can prevent age-related changes to muscles, bones and joints and can reverse these changes too. A person with amyloidosis produces aggregates of insoluble protein that cannot be eliminated from the body. Content on this website is provided for information purposes only. Information about a therapy, service, product or treatment does not in any way endorse or support such therapy, service, product or treatment and is not intended to replace advice from your doctor or other registered health professional.
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Which should I choose? Authors Topics. Amberlee Lovell Nov 15, Related: 7 Surprising Ways To Become a More Creative Person In tribute to our dear lefties and to make up for accusing them of witchcraft, here are some of their most endearing character traits.
They're highly adaptable - Nearly all instruments and machines have been built by and for right-handed people. That means left-handers have had to adapt to less-than-ideal circumstances throughout their whole lives. Hats off to your flexibility, intrepid lefties! They remember events better than facts - This may have to do with the way lefties use their brains , but it definitely makes their memory special.
Being left-handed is more common in twins - One study found that 21 percent of twins are left-handed.
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