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hormones

Endocrine changes accompanying substantial weight loss: sex hormone binding globulin, testosterone, oestradiol, cortisol and the reproductive axis, including PCOS-specific findings.

14 questions · sorted by votes

37 votes 3 answers20k views
How does insulin resistance link weight, androgens and anovulation in PCOS?

Diagnosed with PCOS at 24, now 31, BMI 34. I have been told for years that losing weight will improve my symptoms, and separately that insulin resistance is the…

pcos
pcos

Polycystic ovary syndrome: insulin resistance as the shared mechanism, ovulatory and menstrual outcomes reported on treatment, androgen changes,…

14 questions
hormones
hormones

Endocrine changes accompanying substantial weight loss: sex hormone binding globulin, testosterone, oestradiol, cortisol and the reproductive…

14 questions
glp1-mechanism
glp1-mechanism

Receptor-level pharmacology: GLP-1R as a class B GPCR, cAMP and PKA signalling, biased agonism, internalisation and resensitisation, and the…

175 questions
semaglutide
semaglutide

A GLP-1 receptor agonist with a fatty-acid-acylated backbone and a roughly one-week half-life, marketed for type 2 diabetes and for weight…

360 questions
asked by elke_brunner 14k · 2.0 years ago
34 votes 3 answers7.4k views
My TSH keeps drifting and I take levothyroxine — is it the weight loss or the gastric emptying?

Hypothyroid on 125 µg levothyroxine for six years, stable TSH around 1.4 mIU/L that whole time. Since starting tirzepatide nine months ago and losing 21 kg, my TSH…

thyroid
thyroid

Thyroid questions: the rodent C-cell findings behind the labelled warning, human calcitonin data, TSH drift during weight loss, and the…

14 questions
hormones
hormones

Endocrine changes accompanying substantial weight loss: sex hormone binding globulin, testosterone, oestradiol, cortisol and the reproductive…

14 questions
bloodwork
bloodwork

Laboratory monitoring: which panels are worth ordering, sensible intervals, reference-range versus optimal-range arguments, and how to read a…

284 questions
dosing-math
dosing-math

The arithmetic itself: milligrams to millilitres to insulin units, concentration after reconstitution, dose per draw, and vial-days per vial. Show…

811 questions
asked by bea_forsberg 14k · 2 months ago
31 votes3 answers8.9k views
My total testosterone fell 27% but my free androgen index fell 64%. Which is real?

Baseline, before starting treatment: total testosterone 2.6 nmol/L, SHBG 22 nmol/L. After eight months and 16 kg of weight loss: total testosterone 1.9 nmol/L, SHBG…

pcos
pcos

Polycystic ovary syndrome: insulin resistance as the shared mechanism, ovulatory and menstrual outcomes reported on treatment, androgen changes,…

14 questions
hormones
hormones

Endocrine changes accompanying substantial weight loss: sex hormone binding globulin, testosterone, oestradiol, cortisol and the reproductive…

14 questions
bloodwork
bloodwork

Laboratory monitoring: which panels are worth ordering, sensible intervals, reference-range versus optimal-range arguments, and how to read a…

284 questions
dosing-math
dosing-math

The arithmetic itself: milligrams to millilitres to insulin units, concentration after reconstitution, dose per draw, and vial-days per vial. Show…

811 questions
asked by carys_meredith 17k · 10 months ago
30 votes5 answers21k views
Is triglycerides a better monitoring choice than LDL-C on cagrilintide?

For reference: triglycerides · LDL-C · cagrilintide. The comparison I want does not seem to exist anywhere in a form I can evaluate. I have read the arguments for…

bloodwork
bloodwork

Laboratory monitoring: which panels are worth ordering, sensible intervals, reference-range versus optimal-range arguments, and how to read a…

284 questions
kidney-function
kidney-function

eGFR, creatinine, cystatin C and albuminuria: the acute haemodynamic dip that is not injury, the renal outcome data from the FLOW programme, and…

100 questions
lipids
lipids

Lipid response on treatment: triglycerides, LDL-C, non-HDL-C, ApoB and Lp(a), which of them move with weight loss, and why a fasting panel drawn…

112 questions
hormones
hormones

Endocrine changes accompanying substantial weight loss: sex hormone binding globulin, testosterone, oestradiol, cortisol and the reproductive…

14 questions
asked by u100_marks 38k · 19 months ago
27 votes 5 answers19k views
What ovulatory outcomes have actually been reported in PCOS?

I have three data points across nine months, which I hope is enough to see a trend. I can parse the result. I am less sure what it licenses me to conclude. I have…

pcos
pcos

Polycystic ovary syndrome: insulin resistance as the shared mechanism, ovulatory and menstrual outcomes reported on treatment, androgen changes,…

14 questions
hormones
hormones

Endocrine changes accompanying substantial weight loss: sex hormone binding globulin, testosterone, oestradiol, cortisol and the reproductive…

14 questions
clinical-trials
clinical-trials

Reading the primary literature properly: estimands, intention-to-treat versus per-protocol, confidence intervals, absolute versus relative…

913 questions
asked by a_lindgren 46k · 12 months ago
27 votes 5 answers18k views
What is the reported incidence of constipation on mazdutide in SURMOUNT-2?

Setup, so nobody has to ask: constipation · mazdutide · SURMOUNT-2. I have read the primary source rather than the summary, which has left me with more questions. I…

gi-side-effects
gi-side-effects

The gastrointestinal cluster as a whole - nausea, vomiting, diarrhoea, constipation, reflux, early satiety - with trial incidence rates, dropout…

416 questions
clinical-trials
clinical-trials

Reading the primary literature properly: estimands, intention-to-treat versus per-protocol, confidence intervals, absolute versus relative…

913 questions
nausea
nausea

The dominant tolerability signal in every trial of the class: incidence, timing relative to a dose step, duration, and the distinction between…

346 questions
hormones
hormones

Endocrine changes accompanying substantial weight loss: sex hormone binding globulin, testosterone, oestradiol, cortisol and the reproductive…

14 questions
asked by anouk_desmet 18k · 2.1 years ago
27 votes0 answers5.2k views
How comparable are retatrutide and tirzepatide on the evidence available?

What I am working with: retatrutide · tirzepatide. I suspect the honest answer is that it depends, in which case I would like to know on what. Assume I can obtain…

clinical-trials
clinical-trials

Reading the primary literature properly: estimands, intention-to-treat versus per-protocol, confidence intervals, absolute versus relative…

913 questions
semaglutide
semaglutide

A GLP-1 receptor agonist with a fatty-acid-acylated backbone and a roughly one-week half-life, marketed for type 2 diabetes and for weight…

360 questions
tirzepatide
tirzepatide

A dual GIP and GLP-1 receptor agonist. Questions here cover the SURPASS and SURMOUNT programmes, the practical differences from a pure GLP-1…

162 questions
hormones
hormones

Endocrine changes accompanying substantial weight loss: sex hormone binding globulin, testosterone, oestradiol, cortisol and the reproductive…

14 questions
asked by j_wierzbicki 45k · 8 months ago
22 votes 5 answers13k views
What is the reported incidence of fatigue on ecnoglutide in PIONEER-4?

The particulars: fatigue · ecnoglutide · PIONEER-4. I want to understand what this actually establishes, as opposed to what it is being used to imply. My concern is…

gi-side-effects
gi-side-effects

The gastrointestinal cluster as a whole - nausea, vomiting, diarrhoea, constipation, reflux, early satiety - with trial incidence rates, dropout…

416 questions
clinical-trials
clinical-trials

Reading the primary literature properly: estimands, intention-to-treat versus per-protocol, confidence intervals, absolute versus relative…

913 questions
nausea
nausea

The dominant tolerability signal in every trial of the class: incidence, timing relative to a dose step, duration, and the distinction between…

346 questions
hormones
hormones

Endocrine changes accompanying substantial weight loss: sex hormone binding globulin, testosterone, oestradiol, cortisol and the reproductive…

14 questions
asked by seamus_brady 17k · 10 months ago
22 votes 4 answers6.3k views
Why did my magnesium move after twelve weeks on dulaglutide?

The case in front of me: magnesium · twelve weeks · dulaglutide. I have two candidate explanations and no way to distinguish them. The same procedure has worked…

bloodwork
bloodwork

Laboratory monitoring: which panels are worth ordering, sensible intervals, reference-range versus optimal-range arguments, and how to read a…

284 questions
kidney-function
kidney-function

eGFR, creatinine, cystatin C and albuminuria: the acute haemodynamic dip that is not injury, the renal outcome data from the FLOW programme, and…

100 questions
lipids
lipids

Lipid response on treatment: triglycerides, LDL-C, non-HDL-C, ApoB and Lp(a), which of them move with weight loss, and why a fasting panel drawn…

112 questions
hormones
hormones

Endocrine changes accompanying substantial weight loss: sex hormone binding globulin, testosterone, oestradiol, cortisol and the reproductive…

14 questions
asked by area_percent 13k · 10 months ago
13 votes 5 answers9.3k views
Is STEP 1 a fair comparison of oral semaglutide against its comparator arm?

The case in front of me: STEP 1 · oral semaglutide. I want to know whether there is evidence behind this or only repetition. I have checked the obvious registries and…

clinical-trials
clinical-trials

Reading the primary literature properly: estimands, intention-to-treat versus per-protocol, confidence intervals, absolute versus relative…

913 questions
semaglutide
semaglutide

A GLP-1 receptor agonist with a fatty-acid-acylated backbone and a roughly one-week half-life, marketed for type 2 diabetes and for weight…

360 questions
tirzepatide
tirzepatide

A dual GIP and GLP-1 receptor agonist. Questions here cover the SURPASS and SURMOUNT programmes, the practical differences from a pure GLP-1…

162 questions
cagrisema
cagrisema

A fixed-ratio combination of cagrilintide, a long-acting amylin analogue, with semaglutide, studied in the REDEFINE programme. Questions here…

14 questions
hormones
hormones

Endocrine changes accompanying substantial weight loss: sex hormone binding globulin, testosterone, oestradiol, cortisol and the reproductive…

14 questions
asked by deamidation_watch 43k · 3 months ago
10 votes 5 answers9.3k views
Is ApoB worth drawing at baseline before starting dulaglutide?

What I have: ApoB · dulaglutide. I would rather over-plan the first cycle and simplify later. I am prepared to do the work if someone can tell me which work matters.…

bloodwork
bloodwork

Laboratory monitoring: which panels are worth ordering, sensible intervals, reference-range versus optimal-range arguments, and how to read a…

284 questions
harm-reduction
harm-reduction

Reducing avoidable risk where a decision has already been made: independent verification before use, sterility practice, dose arithmetic checked…

445 questions
a1c
a1c

Glycated haemoglobin as a ninety-day glycaemic average: what a change of half a point means, why it lags, and the conditions under which it…

108 questions
hormones
hormones

Endocrine changes accompanying substantial weight loss: sex hormone binding globulin, testosterone, oestradiol, cortisol and the reproductive…

14 questions
asked by Dr_Ravi_Selvarajah 42k · 14 months ago
7 votes 5 answers17k views
How comparable are dulaglutide and mazdutide on the evidence available?

Stated plainly: dulaglutide · mazdutide. Both of these get recommended confidently by different people, which suggests neither is obviously right. My constraints are…

clinical-trials
clinical-trials

Reading the primary literature properly: estimands, intention-to-treat versus per-protocol, confidence intervals, absolute versus relative…

913 questions
semaglutide
semaglutide

A GLP-1 receptor agonist with a fatty-acid-acylated backbone and a roughly one-week half-life, marketed for type 2 diabetes and for weight…

360 questions
tirzepatide
tirzepatide

A dual GIP and GLP-1 receptor agonist. Questions here cover the SURPASS and SURMOUNT programmes, the practical differences from a pure GLP-1…

162 questions
hormones
hormones

Endocrine changes accompanying substantial weight loss: sex hormone binding globulin, testosterone, oestradiol, cortisol and the reproductive…

14 questions
asked by sample_id 17k · 13 months ago
6 votes0 answers3.9k views
Is creatinine a better monitoring choice than cystatin C on semaglutide?

Setup, so nobody has to ask: creatinine · cystatin C · semaglutide. I suspect the honest answer is that it depends, in which case I would like to know on what. Assume…

bloodwork
bloodwork

Laboratory monitoring: which panels are worth ordering, sensible intervals, reference-range versus optimal-range arguments, and how to read a…

284 questions
kidney-function
kidney-function

eGFR, creatinine, cystatin C and albuminuria: the acute haemodynamic dip that is not injury, the renal outcome data from the FLOW programme, and…

100 questions
lipids
lipids

Lipid response on treatment: triglycerides, LDL-C, non-HDL-C, ApoB and Lp(a), which of them move with weight loss, and why a fasting panel drawn…

112 questions
hormones
hormones

Endocrine changes accompanying substantial weight loss: sex hormone binding globulin, testosterone, oestradiol, cortisol and the reproductive…

14 questions
asked by greta_holzmann 15k · 8 months ago
3 votes5 answers15k views
What is the reported incidence of fatigue on dulaglutide in SURMOUNT-OSA?

Numbers first: fatigue · dulaglutide · SURMOUNT-OSA. This is presented as though it settles something, and I am not convinced it does. I have two documents that…

gi-side-effects
gi-side-effects

The gastrointestinal cluster as a whole - nausea, vomiting, diarrhoea, constipation, reflux, early satiety - with trial incidence rates, dropout…

416 questions
clinical-trials
clinical-trials

Reading the primary literature properly: estimands, intention-to-treat versus per-protocol, confidence intervals, absolute versus relative…

913 questions
nausea
nausea

The dominant tolerability signal in every trial of the class: incidence, timing relative to a dose step, duration, and the distinction between…

346 questions
hormones
hormones

Endocrine changes accompanying substantial weight loss: sex hormone binding globulin, testosterone, oestradiol, cortisol and the reproductive…

14 questions
asked by mg_per_ml 12k · 16 months ago
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