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The altitude was one of the main characters in this edition of the Olympic Games. The 2240 meters above the level of Mexico City Sea caused lacked air to thousands of registered athletes in the Games, especially those who relied on speed to get their medals.

In addition, the "thin air" contributed decisively to the avalanche of broken records in Mexico City - were 68 world records and 301 Olympic.

The anti-doping control was also present for the first time in Olympic history. And the first case came from a country usually averse to this type of device: Sweden. Hans-Gunnar Liljenvall drank beyond measure and was caught with a quantity of unacceptable alcohol in his blood. Liljenvall and all the Swedish team ended up disqualified from the race Pentathlon, which had won the bronze medal.

The distrust of the sex of some champion athletes in previous editions won a powerful ally. Tests for Sex evidence entered the field and caused some athletes of the communist bloc give up to compete in Mexico.