The NHS tells us that sugary sweets are bad for us, but Jacqueline Mars (Mars heiress, $23.4bn) and Maria Franca Fissolo (Ferrero heiress, $22.1bn) may disagree (Forbes reveals fall of £50bn in wealth of world’s top 20, 3 March).
Linda Dooley
Manchester
• During the 1970s, at my comprehensive school (Letters, 3 March), our PE teacher taught us how to iron our husband’s trousers without making them shiny (for reasons that now escape me).
Dinah Hickish
St Asaph, Denbighshire
• Dorothy Holman (Letters, 3 March), the approximate exchange rate is one Shard = two Blackpool Towers.
David Santamaria
Bushey, Middlesex
• Join the debate – email guardian.letters@theguardian.com