United Kingdom, April 14 -- Garbage frontwoman Shirley Manson hates "the phrase mental health" and believes it is "nonsense" that people should "permanently ecstatic".

The 58-year-old Scottish singer experienced bouts of depression during the '90s after the band - which also includes drummer and songwriter Butch Vig, who produced Nirvana's 1991 iconic album 'Nevermind' - became globally successful with their self-titled debut LP.

Her feelings of self-loathing were based on critiques of her appearance, but Shirley insists feeling unhappy or depressed are normal emotions in life, not something to be cured.

In an interview with The Guardian newspaper, she said: "I hate the phrase 'mental health', as applied to me.

"I have a very healthy ...