My growth spurt / adulthood was very late... Ritalin responsible? or genetics?

[Mr Haun]

I am 24 TWENTY FOUR and I still grew almost one inch from about age 22. I didnt know this was possible... and my looks/metabolism arent changing the way most 24 year olds have by now...

The only thing I can think of is either genetic makeup laying out a slower chronological biological time clock for growth and aging, OR could Methylphenidate (Ritalin) given to me in moderate doses from age 5-16 have had some responsibility for this.
Does this also mean that one person's 24 years of age could be at the exact same point biologically as another person who is 22? and yet also the stage of a different person who is 26?

[tinmuning]

There's a study which shows that Ritalin may stunt growth in children who took the drug for 3 years or more. For the complete article, here's the website: Study: Ritalin Stunts Growth, Research Shows That After 3 Years On ADHD Medication, Kids Are Shorter And Lighter Than Peers - CBS News