It is a trend rooted in profit-making. Adverts featuring prescription-only weight-loss medications are splashed across the internet – and it is causing concern among experts. But the question remains: who is driving the boom? Consider drugs for other conditions, be it asthma or high blood pressure: a quick internet search might through up a couple of online pharmacies, but not page after page of results offering discount codes for consultations, special offers for returning customers or money-off emails. Yet when it comes to weight-loss jabs, it is a different story. Boots offers returning customers 10% off each time they reorder