The Ghost star spent nearly two years battling pancreatic cancer before he passed away in September (09).
He was often hit by false rumours which included claims he had suffered a heart attack, undergone surgery and reports which regularly suggested he was just days from death.
Donny Swayze is adamant the "lies" hindered his sibling's fight for life because it was so distressing to see tabloids talking about the actor's imminent demise.
He tells U.S. talk show host Larry King, "Grocery shopping at the 7-Eleven corner store for two years (was hard) because going into the grocery store was just too much. In every checkout stand they would have a big picture of my brother with some horrible headline with a lie, a blatant lie (that he had days to live). "
While the star's widow, Lisa Niemi, adds, "We (can) do a list of how many organs (the tabloids said) he's had removed, because he had part of his lung removed, part of his stomach, part of his intestine. Heart attack. You just can't believe that they can say this and get away with it."