He had done weight gain in the past and became fat but with the help of regular exercise and balanced diet he managed to lose some weight.
In his long career he has given many shirtless scenes according to the demand of the script.
Richard Dean Anderson was born in the year 1950 on 23rd of January and this makes his age 65 at this moment.
At this age he has already been a legendary actor and has won millions of hearts with his outstanding acting in TV shows and movies.
Wiki sites like Wikipedia and IMDb contain information about him.Jeff Webber in the American soap-opera series General Hospital, then rose to prominence as the lead actor in the television series Mac Gyver (1985–1992).He later appeared in films such as Through the Eyes of a Killer (1992), Pandora's Clock (1996), and Firehouse (1997).However, Richard Dean Anderson dislikes showing any personal weakness or his need for support, comfort and nurturing. Richard abhors emotional dependency and dislikes "complainers".Richard Dean Anderson inspires others to take positive action in their lives through his own enthusiasm and eagerness to meet life's challenges, and he is attracted to people who are adventurous, courageous and independent.