Researching David Healy

Healy has been involved as an expert witness in homicide and suicide trials involving psychotropic drugs, and has brought concerns about some medications to the attention of drug regulators. He has also said that pharmaceutical companies sell drugs by marketing diseases and co-opting academic opinion-leaders. In his 2012 book Pharmageddon he argues that pharmaceutical companies have dominated healthcare in America, often with life-threatening results for patients. Healy is a founder and chief executive officer of Data Based Medicine Limited, which aims to make medicines safer through "online direct patient reporting of drug effects".

A striker, he is the all-time leading scorer for Northern Ireland with 36 goals, and also shares the record for the highest scoring tally during a UEFA European Championship qualifying campaign of 13 goals, shared with Robert Lewandowski. He began his career as a youth player at Manchester United in 1995, turning professional in 1999, but signed for Preston North End two years later after a short loan spell. He spent three years with Preston, maintaining a healthy goals to games ratio, before transferring to Leeds United in 2004. After three years to Leeds he moved on to Fulham for a season, before settling at Sunderland in 2008. He moved north to Scotland to play for Rangers in January 2011. He helped the club to the SPL title in 2010–11 and also played in the 2011 League Cup final victory, before departing at the end of the 2011–12 season, when his contract expired. He joined Bury for a one-season spell in August 2012. In addition to these clubs he has also played for Port Vale, Norwich City, Ipswich Town, and Doncaster Rovers on loan. He was released by Bury in May 2013, and chose to retire in November 2013 after failing to find a club. Before representing his country at a senior level, he also played for both the under-21 team and the B team.

He began his management career with Linfield in October 2015, and led the club to a NIFL Premiership, Irish Cup and County Antrim Shield treble in 2016–17. The following season proved a disappointment, before they secured the league title and the Northern Ireland Football League Cup in 2018–19. They retained the Premiership trophy in 2019–20, and would win another Premiership and Irish Cup double in 2020–21.

Healy was born in New York City. His television credits include voices for the Supermarionation series Captain Scarlet and the Mysterons, Joe 90 and The Secret Service, as well as parts in UFO, The Troubleshooters, Randall and Hopkirk (Deceased), Strange Report, Dickens of London, Space Police (a TV pilot), Space Precinct and Dallas. He also starred as Dr. Watson opposite Ian Richardson's Sherlock Holmes in the 1983 TV film of The Sign of Four.

His big screen credits include The Double Man (1967), Only When I Larf (1968), Assignment K (1968), Isadora (1968), Patton (1970), Lust for a Vampire (1971), Madame Sin (1972), Embassy (1972), Endless Night (1972), Twilight's Last Gleaming (1977), Winterspelt (1979), Supergirl (1984), and Haunted Honeymoon (1986). He also gave uncredited performances in the James Bond films You Only Live Twice (1967) and Diamonds Are Forever (1971).

In 1983, Healy received the Laurence Olivier Award for Best Supporting Actor for his role in Guys and Dolls during the 1982 theatre season. His performance of "Nicely Nicely Johnson" was praised as "show-stopping" as he sang "Sit Down You're Rockin' the Boat". He performed a mid-show encore each night. In late 1980s he played the character of Buddy Plummer in the original London run of the Stephen Sondheim musical Follies at the Shaftesbury Theatre.

Healy died following a heart operation on October 25, 1995 in London, England.