valetudinarian
Concise Oxford English Dictionary © 2008 Oxford University Press:
valetudinarian /ˌvalɪtjuːdɪˈnɛːrɪən/
▶noun a person who is unduly anxious about their health.
■ a person in poor health.
▶adjective showing undue concern about one's health.■ in poor health.
– derivatives
valetudinarianism noun.
valetudinarianism noun.
– origin C18: from L. valetudinarius ‘in ill health’.
'valetudinarian' also found in these Oxford entries:

