A month-long study on smokers suggests vaping could reduce the risk of heart attacks and stroke.
The parents of Natasha Ednan-Laperouse, who died in 2016, call the increase "deeply alarming".
The ambulance service said the person who left the message should "remember crews are there to save lives".
Matthew Griffin, 21, thought he would be able to sleep off his symptoms after feeling unwell.
Record numbers in England are on hospital waiting lists, while A&E delays highest since target introduced.
Garlic and ginger pills can delay the healing of skin wounds when breast cancer spreads, expert says.
A UK-wide shortage of the nasal spray is leading to delays in school flu programmes across Scotland.
The party says it would tax the "wealthiest" to cut hospital waiting times if it wins the election.
Nurses will hold a 12-hour strike on 18 December, with more action planned before the new year.
A second Ebola vaccine is to be offered to thousands of people in the Democratic Republic of Congo.