Anti-Obamacare ad is not only tone-deaf and creepy – it’s also harmful

Tom McCarthy: Video aimed at getting US college students to opt out of healthcare reforms – without realising they're already rejecting it

Smoothies and fruit juices are a new risk to health, US scientists warn

Scientists say potential damage from naturally occurring fructose in apparently healthy drinks is being overlooked

Turning back the clock: how to stop (or slow) signs of ageing – live chat

Emma G Keller: Lauren Kessler spent a year investigating the ageing process and what – if anything – we can do to prevent it. She'll take your questions live today at 1pm ET

Heavy coffee consumption increases death rates in under-55s, study suggests

Scientists claim those in age group who drink average of more than four cups of coffee a day are at 56% greater risk of death from all causes

DrinkSavvy: how your straw could help you stay safe

New drinkware changes color and pattern in the presence of common 'date-rape' drugs GHB, ketamine, or Rohypnol

CDC says HPV down by 56% among teenagers since vaccine introduction

Health officials say decline is 'encouraging' but concern remains over lack of discrepancies in awareness of vaccine

Seattle woman Naveena Shine drops attempt to live on light

Shine went for 47 days without food but says financial difficulties she's enduring are 'message from the universe that it is time to stop'

Campaigners celebrate as Plan B morning-after pill made available to all

Contraceptive to be made available without prescription or age limit after Obama administration drops opposition

Coming soon: invasion of the marauding nymphomaniacs

Naomi McAuliffe: Thanks to 'female Viagra' and government regulation, we women can enjoy sex again – just hopefully not too much

The US army is more than PTSD and sexual assault

Don Gomez: Contrary to recent headlines, my army service has been about great Americans working together to solve problems