Cruise secrets: Ship doctor reveals passengers LIE about this – but they’ll always know

Passengers may think they’ll fooling the staff but they’re well aware of the truth.

“Seasickness is a very convenient illness,” Macfarlane’s medical colleague told him, he writes in the book.

“You’ll notice that the people who suffer the most are the ones who were in the bar knocking back mojitos at 2am the previous night.

“You’ll also see that these people never have hangovers. They come to us with sore heads in the morning because they’re prone to ‘migraines’.

“They feel sick when they wake up because of the air-conditioning in the staterooms, not because of all the vintage port they consumed at midnight.”

The same doctor also reveals his unusual cures for those actually suffering from seasickness.