Two New Brunswick men who underwent so-called liberation therapy for say it is time the controversial treatment was made available in Canada, despite studies that have questioned its efficacy.

Tim Donovan and John McLaughlin have launched a four-month, cross-country tour to tout the benefits of the treatment, which involves widening constricted neck veins to improve blood flow from the brain.

Mr. Donovan, a councillor in Fredericton Junction, N.B., said he doesn't need any more convincing. The 59-year-old had the procedure at a clinic in Albany, N.Y., last summer.

“I never had the ability to stand here and hug my grandchildren and spend my life with them as much as I do now,” Mr. Donovan said Thursday, choking back tears as he addressed a small crowd in front of the provincial legislature in Fredericton.

“This doesn't hurt anybody and helps everybody,” he said. “There is some controversy, but people are getting better, and that's all we care about.”

But a number of recent studies, including one by the University of Buffalo, have cast doubt on whether narrowed neck veins are the primary cause of MS, and in turn, whether the treatment actually provides benefits.

Mr. McLaughlin had the procedure two weeks ago in Rhode Island.

“I can now see colour, my energy level is improved dramatically, my cognitive skills have improved, and the results are real,” Mr. McLaughlin said.

“It's not a cure but it sure makes a dramatic improvement in the quality of life of someone who is waking up every morning with the nightmare of MS.”

Mr. Donovan and Mr. McLaughlin are calling on the federal and provincial governments to make the therapy available in Canada.

The MS Society of Canada has said that the treatment should only be done as part of clinical trials.

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