A number of health-related stories make Friday's front pages, including the decision by the home secretary to allow specialist doctors in the UK to legally prescribe cannabis products.
The i says the decision - due to take effect in the autumn - was made after an "outcry over sick children" in the UK.
It pictures Billy Caldwell and his mum Charlotte, who has led the campaign for access to the drug to treat his rare form of epilepsy.
The heatwave makes the headlines again ahead of thunderstorms setting in later.
The Daily Mail says melting roads, buckling railways and hospitals swamped by dehydrated patients are struggling to cope.
According to the Daily Telegraph, outdoor events such as fun runs, charity walks, dog shows, concerts and fairs have been called off over fears that participants will overheat.
The Times says Lords cricket ground allowed members and guests to enter the Pavilion without a jacket for the first time.
For the Metro, the summer sunshine we usually long for is proving too hot to handle. "Wrong type of sun" is the paper's headline.
On the bright side, the Daily Mirror says the heatwave has sparked a boom for seaside resorts and staycations, with people flocking to the beach.
The FT says it marked the biggest one-day value destruction of a listed company in US history, almost equal to the entire value of McDonald's and Nike, and larger than the entire Argentine stock market.
Facebook is also the subject of the lead in the Times - but for a different reason.
An investigation by the paper has found that anti-Semitic posts claiming that the Holocaust is a lie, and containing offensive remarks about Jews, remain on the social media site, despite being flagged to the company.
The report says it found scores of examples of material designed to incite hatred and violence against Jews.
It adds that when the material was highlighted to Facebook on Thursday, some was taken down, but several posts and pages remained later that evening.
A Facebook spokeswoman tells the paper it does not allow anti-Semitic hate speech or incitement of violence of any kind.
The Daily Telegraph leads with a warning that a "drastic" decline in the number of teenagers taking holiday jobs is leaving the nation's youth ill-prepared for the workplace. The suggestion comes in an article for the paper by Work and Pensions Secretary Esther McVey.
She says a "cultural shift" has led to young people becoming "increasingly focused on education and training", with most shunning the chance to earn extra money and get vital experience.
"Living beyond our means" is the Daily Mail's headline. It points to official figures showing that households are spending more than they earn for the first time in 30 years.
The paper reports that the average family went £900 into the red last year - plugging the gap by raiding savings or taking on debt. It says there are growing fears over credit card debt, car finance deals and the return of super-sized mortgages.
And the Independent website says more than 200,000 people have signed its petition calling for a referendum on the final Brexit deal.
It launched its campaign for a vote earlier this week and says it has the backing of leading MPs across the political spectrum.
"Are you listening, Ms May?" it asks.