"For the past 22 years Jaime Guevara-Aguirre has served as the de facto physician for a truly unique community in Ecuador.
His patients stand on average 1.2 meters tall, a result of a rare genetic disorder known as Laron syndrome.
Of the approximately 300 people in the world known to have the condition, a third reside in the remote mountainside villages of southern Ecuador.
Another remarkable fact about Guevara-Aguirre’s patients: virtually none of them suffer from cancer or diabetes"
www.scientificamerican.com/article.cfm?id=defective-growth-gene-in-dwarfism
http://uscnews.usc.edu/science_technology/dwarfism_gene_linked_to_protection_from_cancer_and_diabetes.html