Anorexia is surely impossible to understand fully for non-anorexics, however I can imagine that biochemical differences and changes occur with chronic undereating - leading to a snowball effect.
Tanning on the other hand.... I've used a tanning bed and it feels sorta pleasant and warming. But addiction? What chemical changes could come about from it that cause a repeat desire. Besides she only does it once a fortnight. That'd not be enough to matter if there's some chemical/pleasure-reward mechanism going on surely.
If I smoke once a fortnight I don't call that an addiction.
Tanorexia has got to be a useful term for those teenagers that overcook/overpaint themselves though. Sure know that I'm going to use the tag - thanks !
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