Has the expert behind Covid symptom tracker app ZOE now invented the most scientific diet ever? 

The promises are bold: lose half a stone in 12 weeks, feel ’80 per cent more energised’ and ward off heart disease – and all without counting a single calorie.The promises are bold: lose half a stone in 12 weeks, feel ’80 per cent more energised’ and ward off heart disease – and all without counting a single calorie.Read MoreHealth News | Mail Online