Dr. Muhammad Mustansar is a Pakistani child specialist and Assistant Professor of Biochemistry who holds the Guinness World Record for collecting 1,994 baby pacifiers. He collected the pacifiers not to set a record but to raise awareness about disadvantages of their use. Mustansar has co-authored books on pediatric nutrition and holds several honors including national awards for research in medical sciences from the Government of Pakistan. He has over 40 publications in medical journals.