Analysis published by the Institute for Fiscal Studies (IFS) last month said that total health care spending in England (not just on the NHS) would need to increase by around 3.3% a year over the next 15 years in order for the NHS to keep functioning at its current level.
May has pledged to increase funding for the National Health Service by 20 billion pounds ($26.57 billion) by 2023/24, even as some critics said that Britain's departure from the bloc will weaken, not strengthen, public finances.
"The truth is that in spite of this welcome extra investment we will face hard choices and we need an honest debate about what the NHS can and cannot do", he said.
Jeremy Hunt, the health minister, who also campaigned for Britain to remain in the European Union, was quoted by the Sunday Telegraph as saying that the new pledge "can now unite us all".
The Tories have now admitted that the NHS needs more funding, but are not prepared to provide what is required to pull the health service (not to mention social care) out of crisis.
Chancellor Philip Hammond would unveil the details of the tax changes, agreed by her Cabinet at a meeting this morning, "in due course", she added.
Theresa May's plans for a £384 million-a-week boost to NHS spending will increase the burden of taxation, Health Secretary Jeremy Hunt has confirmed. "It's right that we use that money to spend on our priorities, and the NHS is our number-one priority".
As we prepare to celebrate the 70th birthday of the NHS, the truth is that Brexit poses the biggest risk to our health service in its history.
Hunt states that the funding will help "deliver the improvements people desperately want from their NHS" including better cancer survival rates and reduced waiting times for mental health treatment.
Tory MP Sarah Wollaston, the chair of the Health & Social Care Committee, said the Brexit dividend claim was "tosh" which "treats the public as fools".
'However, we will be scrutinising the detail of this new package of funding to assess the degree to which it will make a real difference in both the short and long term to frontline patient care'.
The Conservative government is claiming it can pay for a £20bn per year cash injection into the NHS primarily through money saved by ending European Union payments.
He long ago recognised the power that Brexit and its spurious dividend could have in securing support for a deal among his cabinet colleagues, and NHS chief executive Simon Stevens was a willing ally, raising the spectre of the £350m battle bus in his lobbying for a budget bail-out previous year. "It must be a plan that enjoys the support of NHS staff across the country - not something dreamt up in Whitehall and centrally imposed".
"We have looked carefully at what we have put into the NHS to ensure that we deliver world-class healthcare".