Unless it's missing what it needs for survival, the body is rarely anxious without the input of the mind but
stressful thoughts activate the amygdala, the brain's danger sensor, and switch on the fight - or - flight response even when there's no physical danger present.
Attachment was already described by Bowlby (1969) as
thought to determine how people cope with and adjust to
stressful life events and it seems plausible to consider infertility as a stressor that has the capacity to
activate attachment patterns (Feeney, 1999).