Failure to reduce nation’s salt intake has killed thousands, say activists

Report shows voluntary action by food industry has seen only 52% of reduction targets met

Mattress firm tells customers beds do not record them sleeping

Privacy policy reference to collecting audio alarmed Sleep Number’s customers

Breast implants study reveals serious safety concerns

Global investigation finds lack of clinical oversight and failure to track long-term outcomes

Australian database seeks to identify breast implant risks

National register set up in response to lack of thorough clinical testing of devices

Grimsby named unhealthiest high street in UK by RSPH study

Lincolnshire town tops list that punishes locations which have bookmakers and fast food outlets

Austerity is the wrong prescription for the world’s wellbeing

Findings about the impact of a course of heavy-duty cuts on life expectancy make grim reading

The Guardian view on big data and insurance: knowing too much

Editorial: Insurance depends on the pooling of risk but big data may drain that pool

Weight Watchers plans tech rebrand to take on wellness industry

Under the name ‘WW’ the US-listed firm hopes to broaden its appeal as diets begin to wane

Energy drinks: why it is high time their wings should be clipped

The caffeinated, sugary drinks point to health issues such as obesity and type 2 diabetes

How the Oprah effect helped Weight Watchers regain Americans’ trust

Strategy of targeting members’ general health as well as diet boosted by its star ambassador