The reflexive
property of the ear can cause various physical
attributes to appear on the auricle in the
presence of bodily disorders. The association of
auricular signals (presence or absence of
discoloration, marks after pressing, tenderness,
and electrical resistance) and diabetes mellitus
(DM) should be further investigated because
auricular diagnosis is an objective, painless,
and noninvasive method that provides rapid
access to information. A matched
case-control study on 282 subjects was
conducted. Cases
(n = 141)
were defined as those diagnosed with type 2 DM
(T2DM). Every subject in the case group was
matched with the control by age and gender. Ear
diagnosis was conducted in three aspects:
inspection, electrical detection, and tenderness
testing. Results suggest that the tenderness and
electrical conductivity of some auricular
points, including “pancreas and
gallbladder,” “endocrine,”
“kidney,” “lower
tragus,” “heart,” and
“eyes,” were associated with T2DM
status in Chinese population. In the subgroup
analyses, certain auricular signals were also
associated with glycemic control, disease
duration, and related complications. Auricular
diagnosis could be considered as a screening
method for vulnerable populations with T2DM
risk. Thus, appropriate interventions can be
implemented to prevent or delay the progression
of T2DM.