Attorneys on both sides would not say whether there is a criminal investigation, although court records indicate the Ohio Medical Board has talked with some of the patients.

The lawsuits say that Jenkins, who has a doctorate degree in physiological science, wasn't authorized to order medical tests and that her husband, a licensed doctor who is a partner in the Toledo Clinic, signed off on the tests and was sometimes listed as the referring physician on billing even though he did not see any of the patients.

An attorney for the couple would not answer questions about the cognitive clinic, which abruptly shut down after about a year in early 2016.

Jenkins and her husband did not respond to messages seeking comment.

In court filings responding to the lawsuits, each of which seeks more than $1 million in damages, their attorney did not dispute that Jenkins was unlicensed but denied most of the other allegations.

The former patients have sued the Toledo Clinic, as well, saying it should have known Jenkins lacked the training and credentials to treat and diagnose patients. Michael D'Eramo, chief administrative officer of the Toledo Clinic, said he could not comment.

Some describe her as compassionate and easy to talk with, saying she ended therapy sessions by telling them to give her a hug. At her suggestion, a few patients appeared in articles touting the benefits of her holistic treatments, which included memory games and daily doses of coconut oil. But they also say she fought hard against medication and getting a second opinion.

Nearly all of those diagnosed by Jenkins began seeing her after suffering traumatic brain injuries or worsening cognitive issue. Some, like Blazsek, are continuing treatment with other doctors.

Attorney David Zoll, who is representing those suing Jenkins, said that it's not clear how many patients she saw and that others might not know they were misdiagnosed with Alzheimer's. More than 30 people added their names to the lawsuits late last month.

He said he believes she was motivated by greed, saying several patients were overbilled. The cognitive clinic grew rapidly, he noted.

"Many times she would see the first person and have them bring in their whole family," Zoll said. "And many times she would diagnose the whole family."Kay Taynor was diagnosed with Alzheimer's on her second visit to Jenkins and then referred five or six friends and family members to her office, including her husband of 48 years. All were told they had the disease, she said, but her husband, Gary, took it hardest.

"He's got a smile that just lights up the room, and I never saw it again," she said. "He just sunk in his chair. To me, he never stood up again. He was never tall again. He gave up."Gary fell into depression, spending his final weeks sitting in a chair with his hands in his lap until he went into their garage and shot himself in the head, she said. An autopsy did not show any signs of Alzheimer's, she said.