There is no real official answer to this question but the skinnest person in United States of America is 36 pounds.
Robert Wadlow died in 1940, and there is no way of knowing if there were taller people off record, before people cared, of in a third world country, but he is the tallest person there is record of.
The fastest person on record ran 23 mph
The average time for a person to run a 12k race is 42 minutes. The world record for a 12k race is 37 minutes and 50 seconds.
The oldest unambiguously documented person in the world was Jeanne Calment, who lived to 122 years, 164 days. The oldest living person as of now (5/16/11) is Besse Cooper, who is 114 years old.
Skydiving height-Felix Baumgartner, over 24 miles
on google
2.3 pounds
The weight of the skinniest person ever is 50 pounds for an adult
Norma Stitz 56 lbs on each side
the skinniest skinny jeans, DER
Darren Sproles
is this close enough?
East Asians
The world's skinniest Woman is Lizzie Velasquez weighing in at only 60 lbs. Lizzie suffers from that disease known as Neonatal Progeroid Syndrome causing her severe weight loss and aging.
google images / youtube?
Yes you could be the skinniest person in the world then gain 18 stone by surgery, im a surgeon so i know that,
Record breaking Holocaust baby "Julia" weighed a whopping 1.68 pounds.