0:00
Hello.
My name is Professor Tricia Tan.
I'm a consultant
in metabolic medicine
and endocrinology
at Imperial College.
My lecture today
will be on diabetes, obesity,
and the mechanisms
of remission of diabetes
after bariatric surgery.
0:17
To start with,
let me say that from now on
whenever I mention diabetes,
I will be particularly referring
to type 2 diabetes,
the most common type.
The intimate relationship
between diabetes and obesity
has been clear
for the last 50 years.
This slide shows
the progressive rise in obesity
in the United States driven
by the availability of cheap,
tasty, and high-calorie foods,
plus reduced opportunity
to expend energy.
This has been paralleled
by the rise
in diabetes' prevalence.
The same story is being noted
all over the world
and UK is no exception.
0:57
This graph shows
the prevalence of obesity
in patients with diabetes.
It serves to show that many
diabetic patients are obese.
Generally speaking,
between 30% to 80% of patients
with diabetes are obese
on the BMI criteria,
depending on ethnicity
of the population studied.
Chinese populations appeared
to have a relatively
low prevalence of obesity
in diabetes by BMI criteria.
However, if we'd look
at waist circumference
as a measure
of visceral adiposity,
the prevalence is higher.
We can therefore say
that there is clear relationship
between obesity and diabetes,
but the strength
of this relationship
depends on ethnicity
of the population
you are studying.
