How can business tackle double burden of obesity and undernutrition? – live chat

Join experts in the comments section of this page on Wednesday, 24 February, 1-2pm GMT to discuss the role of food companies in improving public health

Why a tax on fizzy drinks would help tackle the UK’s £10bn diabetes epidemic

More than one in 20 people in the UK has type 2 diabetes, with consumption of sugary drinks proven to be a direct cause. Failing to tax them is irresponsible

Can smartphone drug trials improve medical care?

A new clinical trial is attempting to track how participants suffering from depression respond to mental health apps

Unilever boss warns UK against sugar tax

Paul Polman says the tax is ‘not the holy grail’ and there is little evidence around the world such a levy can actually tackle Britain’s obesity crisis

Coca-Cola ads suggesting soda is made from apples lead to legal battles

Campaigners in Mexico say company delayed investigation into advertising campaign for Sidral, a fizzy drink with 60 grams of sugar in each 600ml bottle

Fitness trackers enjoy healthy sales despite lack of evidence they work

Soaring Christmas sales for Fitbit and Jawbone are, on the face of it, good for UK’s obesity crisis. But there are concerns about privacy and effectiveness

Eating less meat isn’t just good for you, it could save the planet

The UK and US are reviewing their dietary guidelines – this is an opportunity to tackle climate change via people’s plates

Find out how much you procrastinate – and how to win back time

Take and share this quiz to learn how to be more dynamic: you’ll soon be a stranger to the snooze button

David Lynch and Katy Perry promote meditation with Carnegie Hall event

Transcendental meditation has been a hit for six decades with celebrities like Jerry Seinfeld and the Beatles, but the high cost makes some people skeptical

Collaboration, not taxation, is needed to tackle obesity

Helping firms rework recipes to reduce sugar will be more effective than new labelling rules, says Ian Wright of the Food and Drink Federation