By Dr Giles Yeo and Tristan Quinn, San Diego.
The father of the alkaline diet, Robert O Young, is hailed as an inspiration by one of the UK's most popular food writers, Natasha Corrett, but he faces a jail sentence for practising medicine without a licence. One patient who believed he could cure her cancer, British Army officer Naima Houder-Mohammed, paid thousands of dollars for his alkaline treatment, which consisted mainly of intravenous infusions of baking soda.
"Naima was a fighter. She fought to get through selection for Sandhurst. She fought through Sandhurst and she fought her way through her life in everything she dealt with army skiing or whatever it may have been. And this for her was another fight in that long list of victories."
She came across Dr Robert O Young, an American alternative health writer selling a message of hope for cancer patients online.
In one email Young sent to Naima in July 2012, he told her "there is a great need for a daily regime focused on… hyper-perfusing the blood with alkalinity". He went on: "I would suggest your healing program is goingto take at least 8 - 12 weeks. It will not be easy but you will be in a controlled environment that will give you the care you need."
Naima set about raising the money she would need - in one email Young mentioned a figure of $3,000 (£2,440) per day.
Naima's family used their savings, ran fund-raising events and managed to pull together tens of thousands of pounds with the help of a charity so that Naima could be treated by Young.
All in all, Naima and her family paid Young more than $77,000 (£62,700) for the treatment.
After about three months at Young's facility, her condition worsened and she was taken to hospital. Naima was brought back to the UK and died with her family. She was 27.
Afzal Amin told us: "They feel utterly betrayed. It's just horrific that somebody could exploit people for money. This is I think for them the most disturbing element, that for something as cheap as money he was just able to destroy people's lives."
I absolutely agree.
In court it was revealed that he is not a medical doctor and bought his PhD from a diploma mill.
The outrage is real. I'm speechless.