Case series / case reportcited by the Tayebat archiveabstract only checked A-INS-18 standard review

Intensive insulin in 14 patients

Intensive conventional insulin therapy for type II diabetes. Metabolic effects during a 6-mo outpatient trial.

Overview

Henry RR et al.. Diabetes Care 1993 · PMID 8422777 · DOI 10.2337/diacare.16.1.21

Blood sugar normalised but patients gained almost 9 kg in six months.

Does the study support the specific claim? Partly · Methodological quality: very low

Original publication

Plain-language summary

Study explained simply
What did the researchers want to find out?

Metabolic effects of intensive conventional insulin in type 2 diabetes

How was the study done?

Uncontrolled 6-month clinical study

How many people, animals or samples were studied?

14; Type 2 diabetes outpatients

What was actually found?

Glucose improved; +8.7 kg.

How large was the observed effect?

+8.7 kg

What do the results mean in everyday life?

Insulin works but can cause substantial weight gain.

What are the study's limitations?

n=14; No control; 1993 regimen

What does it say about Elawady's specific claim?

Kernel of C-INS-01.

Do the results apply to Germany and Europe?

Old US regimen.

What can explicitly not be concluded from this study?

General conclusions.

Scientific in-depth review

1. Full reference

Authors
Henry RR, Gumbiner B, Ditzler T, Wallace P, Lyon R, Glauber HS
Journal
Diabetes Care
Year
1993
Identifier
PMID 8422777 DOI 10.2337/diacare.16.1.21
Verification
verified – PubMed E-utilities efetch, 2026-10-25
Retracted
no
Corrections
none
Extent checked
abstract only
Conflicts of interest and funding

not stated in abstract; grants: NCRR NIH HHS, NIDDK NIH HHS

2. Research question

Metabolic effects of intensive conventional insulin in type 2 diabetes

3. Study design and population

Study design
Case series / case report – Uncontrolled 6-month clinical study
Population

Type 2 diabetes outpatients

Country

USA

Period

6 months

Sample size

14

Inclusion and exclusion criteria

As described in the abstract; details not available in abstract.

4. Methods and endpoints

Exposure / intervention

Split-dose NPH/regular insulin

Comparator

Baseline (no control group)

Endpoints

Glucose, HGO, glucose disposal, weight

Statistical methods

Paired comparisons

5. Actual results

Results

Mean glucose 17.5 -> 7.7 mmol/L; hypoglycaemia 4.1 -> 1.3 events/month; insulin dose 86-100 U; weight 93.5 -> 102.2 kg (P<0.001); weight gain correlated with insulin dose (r=0.62).

Absolute risks

not reported

Authors' conclusion

Intensive insulin rapidly improves control without unacceptable hypoglycaemia but requires large doses, with hyperinsulinaemia and progressive weight gain.

6. Strengths

  • Detailed metabolic measurements

7. Weaknesses

  • n=14
  • No control
  • 1993 regimen

8. Risk of bias

Orienting tool
none applicable
Type of assessment
simplified assessment (abstract only)
Full formal assessment
no
Overall risk of bias
high
Rationale

Uncontrolled small study.

9. Assessment of the statistical interpretation

Small sample.

10. Relevance to the specific claim

Kernel of C-INS-01.

11. Independent contrary findings

12. Transferability to Germany and Europe

Old US regimen.

13. Overall methodological judgement

Small but consistent with larger data.

Multidimensional assessment
Multidimensional assessment
Authenticity of the sourceverified
Methodological qualityvery low
Risk of biashigh
Precision of resultslow
Directnessdirect
Reproducibilityreplicated
Consistency with the overall evidenceconsistent
Regional transferabilitymoderate
Adequacy of the interpretation (by the archive)correctly reported

14. Open questions

None beyond those stated.

15. Linked fact checks

Use by the Tayebat archive

Note: according to the archive, the studies were compiled by the archive operators. Whether Dr. Elawady himself cited this study is not established.

What the archive says about the study

Listed in the archive bibliography for 'insulin-injections' without its own interpretation; used as general support for the claim that insulin intensification harms.

A. What was actually studied?

Metabolic effects of intensive conventional insulin in type 2 diabetes

B. What did the authors find?

Glucose improved; +8.7 kg.

C. What conclusions do the authors themselves draw?

Intensive insulin rapidly improves control without unacceptable hypoglycaemia but requires large doses, with hyperinsulinaemia and progressive weight gain.

D. What does the archive derive from it?

Supports insulin weight gain.

E. Is this derivation scientifically justified?

Justified for weight gain; it also shows insulin effectively lowered glucose.

Adequacy of the interpretation (by the archive)
correctly reported