Hi,thanx for writing,
According to the history of your husband he was an athletes and athletes generally have bradycardia
.but as he has not been working out since a long time it is a matter of concern,.
Plz get his thyroid levels done as thyroid disorder
at times may cause bradycardia with weight loss
Also check him for tuberculosis
and other infective cause.
Get a 2 d echo done as it might be some disorder of heart.
Well consult a physician and he will guide u more appropriately.byeee