The annual awards from the Periodicals Training Council (PTC), which recognise young talent in the magazine and business media industry, give prizes across eight categories in total.
Harris, who also won New Consumer Journalist of the Year, was described by the judges as a "sensational investigator" who has a "fearless and honest approach".
Moya Sarner from City University, London was named Most Promising Student Journalist, with two other shortlisted entrants in the category being highly commended.
The full list of winners and highly commended entrants can be found below:
PTC New Journalist of the Year
Winner - Alex Harris, Men's Health, National Magazine Company
Most Promising Student Journalist of the Year
Winner - Moya Sarner, City University, London
Highly commended - Gary Cansell, Goldsmiths, University of London
Highly commended - Rachel Smith, City University, London
New Business News Journalist of the Year
Winner - Chris Chapman, Chemist+Druggist, UBM Medica
New Consumer Specialist/Customer Magazine Journalist of the Year
Winner - Daniel Bennett, BBC Focus magazine, BBC Magazines Bristol
Highly commended - Helen Thomson, New Scientist, Reed Business Information
New Magazine Designer of the Year
Winner - Victoria Dimmick, Cosmopolitan, National Magazine Company
New Business Features Journalist of the Year
Winner - Nick Duxbury, Inside Housing, Ocean Media Group
Highly commended - Camilla Pemberton, Community Care, Reed Business Information
New Consumer Journalist of the Year
Winner - Alex Harris, Men's Health, National Magazine Company
New Section Editor of the Year
Winner - Jennifer Richardson, Chemist+Druggist, UBM Medica
Highly commended - Lucy Foster, ShortList, ShortList Media
New Editor of the Year
Winner - Terri White, ShortList, ShortList Media
Highly commended - Sara Oldham, Youth & Children's Magazines, BBC Worldwide
Highly commended - Kevin Pettman, Top Gear Turbo Challenge, BBC Worldwide
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