The best thing to do - to become/stay healthy - is to keep the doctor away.
Eva sent this collage of signs of - what we at home call - 'vitamine bombs' aka 'sport-candies'. And since I received this mail art, I am convinced that Fruits are Doctors, too.
Also the advice on the postage stamps ('don't contaminate/pollute') to provide us with clean air, earth and water, of course is an important one.
Moltse gràcies, Eva!
By the way, did you know that there are many collectors of fruit stickers? See for instance
here,
here, and a large collection
here. And besides of using to make mail art, fruit stickers also can help making
pointillistic paintings. Furthermore, the numbers on the stickers are solvable
codes.
(Meanwhile fruitstickers are threatened with extinction, er,
dissolving.)