Recent Blog Articles
Scoring highly on Alternative Healthy Eating Index lowers risk for many illnesses
Can self-employment promote better cardiovascular health for women?
Why is it so challenging to find a primary care physician?
Harvard Health Ad Watch: A new injection treatment for eczema
3 simple swaps for better heart health
I’m too young to have Alzheimer’s disease or dementia, right?
Asking about guns in houses where your child plays
Behavioral weight loss interventions: Do they work in primary care?
Who needs treatment for ocular hypertension?
The popularity of microdosing of psychedelics: What does the science say?
You don’t say? Is there anything right about being left-handed?
History is full of famously talented left-handers, like Leonardo da Vinci, Jimi Hendrix, and Sandy Koufax. Still, lefties make up only 10% of the population, and it’s unclear why they favor their left side.
It’s thought that, as with most behaviors, a mix of genes and environmental factors influences which hand you favor. However, while left-handed people usually have at least one left-handed relative, scientists have not yet identified any genes that determine handedness.
To continue reading this article, you must log in.
Subscribe to Harvard Health Online for immediate access to health news and information from Harvard Medical School.
- Research health conditions
- Check your symptoms
- Prepare for a doctor's visit or test
- Find the best treatments and procedures for you
- Explore options for better nutrition and exercise
I'd like to receive access to Harvard Health Online for only $4.99 a month.Sign Me Up
Already a member? Login ».
As a service to our readers, Harvard Health Publishing provides access to our library of archived content. Please note the date of last review or update on all articles.
No content on this site, regardless of date, should ever be used as a substitute for direct medical advice from your doctor or other qualified clinician.
Free Healthbeat Signup
Get the latest in health news delivered to your inbox!