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Clinical · Comorbidities

Type 2 diabetes and the largest part of the evidence base — does this still hold?

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Solved by f.fonseca in post #8
Gastrointestinal conditions interact with a mechanism that slows gastric emptying in ways that are plausible and largely unstudied. Marking that as an opinion rather than a finding.

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EA
e.almeidaTL2Member15 Mar 2026#1

Type 2 diabetes and the largest part of the evidence base — does this still hold? I have a specific reason for asking rather than idle curiosity, and the context is below.

Trying to work out what would count as evidence on Type 2 diabetes, before collecting any. This is the part I usually skip and it is the part that makes the rest useful.

If two explanations predict the same observation, observing it does not help. So: what observation would separate them?

8 likes 4mo
AS
a.salcedoTL3Regular27 Mar 2026#2

Taking the opening post at face value and following it one step further.

Reading back through the Type 2 diabetes threads from last year, the same three questions come up every time and only one of them has ever been answered properly. That seems like a documentation gap rather than a knowledge gap.

0 likes 4mo
VB
v.bhattacharyaTL24 Apr 2026#3
e.almeida, post #1: Type 2 diabetes and the largest part of the evidence base — does this still hold? I have a specific reason for asking rather than idle curiosity, and the context is below. Trying to work out what would count as evidence on Type 2 diabetes, before collecting any. This is the part I usually skip and it is the part that makes the rest… Go to post

Noted, and thank you for writing it out rather than summarising it.

26 likes in reply to #1 4mo
SD
s.duarteTL212 Apr 2026 · edited#4
v.bhattacharya, post #3: Noted, and thank you for writing it out rather than summarising it. Go to post

A condition that affects nutrition or absorption changes the calculus around a treatment that reduces intake, and that interaction is mostly unstudied.

I checked the source rather than the summary, and they differ.

12 likes in reply to #3 4mo
FW
f.wojcikTL219 Apr 2026#5

Registry and observational data covering excluded populations is accumulating and is weaker evidence than a trial and better than nothing.

I would put the burden of proof on the interesting explanation, not the dull one.

2 likes 3mo
SR
s.rasmussenTL226 Apr 2026#6

Marking my uncertainty on Type 2 diabetes explicitly. I am confident about the direction, much less confident about the size, and not confident at all that it generalises past the case in the first post.

0 likes 3mo
BO
b.okonkwoTL22 May 2026#7
a.salcedo, post #2: Taking the opening post at face value and following it one step further. Reading back through the Type 2 diabetes threads from last year, the same three questions come up every time and only one of them has ever been answered properly. That seems like a documentation gap rather than a knowledge gap. Go to post

Coming back to post #5, because the follow-up matters more than the original answer.

A methods point on Type 2 diabetes rather than a substantive one: if the comparison is not like for like, the difference you are measuring is the difference in method.

19 likes in reply to #2 3mo
FF
f.fonsecaTL2 Solution8 May 2026#8

Gastrointestinal conditions interact with a mechanism that slows gastric emptying in ways that are plausible and largely unstudied.

Marking that as an opinion rather than a finding.

8 likes 3mo
SO
s.okonkwoTL215 May 2026 · edited#9

On post #5 — agreed on the reasoning, with one qualification.

The question underneath Type 2 diabetes is usually "how would I tell?" rather than "what is true?", and that one has a method attached to it.

Write down what you would expect to see under each hypothesis before you collect anything. If they predict the same observation, collecting it will not help.

0 likes 2mo
O
OTeixeiraTL3Regular20 May 2026#10

Multiple comorbidities: a person with diabetes, kidney disease, and cardiovascular disease is outside the studied populations in most trials. Extrapolating to that person requires reasoning from the individual component trials and mechanisms.

That is one dataset and I would not build a rule on it.

0 likes 2mo
TV
t.verhoevenTL226 May 2026#11
OTeixeira, post #10: Multiple comorbidities: a person with diabetes, kidney disease, and cardiovascular disease is outside the studied populations in most trials. Extrapolating to that person requires reasoning from the individual component trials and mechanisms. That is one dataset and I would not build a rule on it. Go to post

Since Type 2 diabetes keeps coming up, it should probably be a maintained page rather than a recurring thread. I am happy to draft it if someone with more direct experience will review it.

0 likes in reply to #10 2mo
TT
taper_tableTL31 Jun 2026#12
MA
m.agyemanTL26 Jun 2026#13

Post #10 answers the question as asked. The question underneath it is different.

Counterpoint on Type 2 diabetes, offered without confidence: the same observation is consistent with a much duller explanation, and nobody has ruled the dull one out.

15 likes 2mo
EC
excursion_checkTL3Regular12 Jun 2026#14

Where two conditions pull in opposite directions, that is a clinical judgement rather than a lookup, and it is the kind of question a forum answers worst.

I would be glad to be shown a cleaner way of putting this.

31 likes 2mo
AH
a.hartmannTL217 Jun 2026#15
e.almeida, post #1: Type 2 diabetes and the largest part of the evidence base — does this still hold? I have a specific reason for asking rather than idle curiosity, and the context is below. Trying to work out what would count as evidence on Type 2 diabetes, before collecting any. This is the part I usually skip and it is the part that makes the rest… Go to post

Interactions between comorbidities: diabetes and kidney disease together change the risk calculation for hypoglycemia and for medication clearance. They are not independent variables.

0 likes in reply to #1 1mo
BM
buffer_marginTL3Regular22 Jun 2026#16
s.duarte, post #4: A condition that affects nutrition or absorption changes the calculus around a treatment that reduces intake, and that interaction is mostly unstudied. I checked the source rather than the summary, and they differ. Go to post

Post #13 put the caveat in the right place and I want to underline it.

Checked the Type 2 diabetes claim against the primary source this morning. It survives, with a narrower scope than the version quoted here. Posting the narrower scope.

1 like in reply to #4 1mo
KH
k.haddadTL227 Jun 2026#17

Where a condition is well controlled and where it is not are different questions and the published data rarely distinguishes them.

The mechanism is plausible, which is not the same as established.

10 likes 1mo
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PSkarbekTL3Regular2 Jul 2026#18

I read the earlier replies on Type 2 diabetes twice before writing this, because I had assumed the opposite and wanted to be sure I was disagreeing with what was said rather than what I expected.

23 likes 26d
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i.amankwahTL27 Jul 2026 · edited#19

Picking up post #18: that is the part I would want checked first.

Genuine question rather than a rhetorical one: has anyone here actually observed Type 2 diabetes, as opposed to read about it? The thread is long and I cannot tell.

32 likes 21d
TN
t.nardoneTL3Regular12 Jul 2026#20
PSkarbek, post #18: I read the earlier replies on Type 2 diabetes twice before writing this, because I had assumed the opposite and wanted to be sure I was disagreeing with what was said rather than what I expected. Go to post

On post #16 — agreed on the reasoning, with one qualification.

Bariatric surgery history: altered anatomy after surgery affects absorption. That matters for oral medications and for reconstituted solutions. Discussing specific medications and doses with a clinician familiar with bariatric surgery is prudent.

Where I would look next, rather than where I would stop.

0 likes in reply to #18 16d
EC
excursion_checkTL3Regular17 Jul 2026#21

Practical answer on Type 2 diabetes, since the theoretical one is upthread: do the simplest check first, write down the result, and only then decide whether the complicated explanation is needed. It usually is not.

4 likes 11d
SV
s.vanheckeTL222 Jul 2026#22
PSkarbek, post #18: I read the earlier replies on Type 2 diabetes twice before writing this, because I had assumed the opposite and wanted to be sure I was disagreeing with what was said rather than what I expected. Go to post

Confirming post #21 from a second method, which matters more than confirming it from a second person.

I have no financial interest in anything named in this thread and I want to say so before I comment on Type 2 diabetes, because it is the sort of subject where it matters.

0 likes in reply to #18 6d
CN
c.niemelTL3Regular27 Jul 2026#23

Post #21 describes the usual case. This is about the unusual one.

Cardiovascular disease: several compounds have cardiovascular outcome trials. SELECT was in people without diabetes; SUSTAIN 6 was in high-risk diabetes. Absolute benefit is largest in high-risk people.

0 likes 1d

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