PRWeek understands Smeeth's priority is to spend time with an unwell family member. He then wants to return to a consultancy role.
F-H Europe regional director for the UK and South Africa Kevin Bell said: 'Michael is a great guy and we are sorry to see him go.'
Bell said he already had replacements for Smeeth and Krol lined up, and expected to unveil new F-H healthcare bosses within days.
F-H UK healthcare associate director Claire Eldridge recently quit (PRWeek, 30 September).