But putting the anger "into context", Dr Shepherd explained how the medical profession had re-defined the illness to include a "wider spectrum" of conditions and triggers.

BBC: 'Vicious campaign' against ME researchers

Both are cancer patients but opioids are equally needed to help patients with a range of other debilitating conditions such as heart failure, kidney and respiratory illness and neurodegenerative disorders.

BBC: Morphine and pain control

It has been estimated that one in three pilgrims suffers respiratory symptoms during the pilgrimage, and overcrowding (in tents accommodating up to 100 people) provides ideal conditions for illness to spread.

ECONOMIST: Health and the haj

If we can help people do more physical exercise - especially when they are at risk of illness or recovering from it - we can cut the number of deaths from conditions like heart disease and stroke.

BBC: Exercise on prescription

Most had multiple chronic conditions in particular, coronary-artery disease, asthma, and complex mental illness.

NEWYORKER: The Hot Spotters