Regime or regimen?

[Miss Mae]

What is the difference of the two words?

TheFreeDictionary.com states that regime refers to a regulated system in a diet or in an exercise. Regimen has the same meaning with the words 'intended to promote health or achieve another beneficial effect' added to its definition.

Which, then, is appropriate in this sentence? The masseuse continued to knead her body, and the woman did not wonder anymore why Thai massage is part of a normal health (regime, regimen) in Thailand.

[Joe Carillo]

Both “regimen” and “regime” in the sense of a regular pattern of occurrence of action (as in Thai massage) are semantically acceptable in that sentence, but “regimen” is the more appropriate and more precise word choice. This is because “regimen” is more specific to the sense of a systematic plan designed to improve and maintain the health of a patient, whereas “regime” is more general in sense.

[Miss Mae]

Thank you, Sir!

[ZHANG FELIX]

eg:Under the old regime women could not vote.
eg:Under such a regimen you'll certainly live long.