It may actually be good for you – a mysterious, seemingly beneficial “ice-cream effect” has been observed in diet-related research multiple times. Ice-cream vans should broadcast those findings instead of catchy jingles. Unfortunately, many scientists are sceptical that the ice-cream effect is real. Is it too late to tell the kids the van only plays a tune when it’s out of ice-cream? Don’t say: “I scream, you scream, we all scream for high ice-cream prices caused by acute and sustained climate and energy shocks!”