Experts say there is "no strong evidence" the monitors, proven to be effective in managing diabetes, can also help people without the condition.
Entries by BBC News
Jasna Macanovic was sacked after questioning a "risky" dialysis practice championed by ex-colleagues.
How a team of former addicts are trying to stop others from becoming "deaths of despair" in Blackpool.
Thousands were infected with HIV and hepatitis C in the worst treatment disaster in NHS history.
BBC News analysis reveals wide variation across England in waits for planned hospital treatment.
BBC News analysis reveals wide variation across England in waits for planned hospital treatment.
Researchers who have studied thousands of children suggest a new measure could be more accurate.
The reality TV star tells the BBC why she plans to donate any eggs she doesn't use.
The reality TV star tells the BBC why she plans to donate any eggs she doesn't use.
Paul Alexander worked as a lawyer and lived for decades in a metal cylinder which breathed for him.