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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.

13 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,…

9 questions
hormones
hormones

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

13 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…

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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…

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asked by elke_brunner 17k · 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…

23 questions
hormones
hormones

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

13 questions
bloodwork
bloodwork

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

296 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…

764 questions
asked by bea_forsberg 11k · 2 months ago
31 votes 5 answers42k views
Does a free androgen index respond faster than the symptoms do?

My laboratory results are from the same laboratory each time, drawn fasting, which I gather matters. I would like help reading this properly rather than being told…

pcos
pcos

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

9 questions
hormones
hormones

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

13 questions
bloodwork
bloodwork

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

296 questions
asked by Dr_Aoife_Brennan 20k · 19 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,…

9 questions
hormones
hormones

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

13 questions
bloodwork
bloodwork

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

296 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…

764 questions
asked by carys_meredith 12k · 10 months ago
27 votes 5 answers47k views
Is a mildly raised prolactin worth chasing during rapid loss?

My laboratory results are from the same laboratory each time, drawn fasting, which I gather matters. The failure mode I am trying to avoid is making this decision…

hormones
hormones

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

13 questions
bloodwork
bloodwork

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

296 questions
harm-reduction
harm-reduction

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

472 questions
asked by rae_oyelowo 17k · 23 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,…

9 questions
hormones
hormones

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

13 questions
clinical-trials
clinical-trials

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

745 questions
asked by a_lindgren 58k · 12 months ago
24 votes 4 answers47k views
How should contraception be handled if cycles resume?

I have the full paper rather than the abstract, and the supplementary appendix. This is a planning question. I know what my options are; I do not know how to weigh…

pcos
pcos

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

9 questions
hormones
hormones

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

13 questions
harm-reduction
harm-reduction

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

472 questions
asked by Dr_Malik_Osei 19k · 2.4 years ago
20 votes5 answers22k views
What ovulation-rate change has actually been published in PCOS cohorts?

I have the full paper rather than the abstract, and the supplementary appendix. I want to understand what this actually establishes, as opposed to what it is being…

pcos
pcos

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

9 questions
hormones
hormones

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

13 questions
clinical-trials
clinical-trials

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

745 questions
asked by retest_please 9.7k · 10 months ago
15 votes 4 answers6.7k views
How does cortisol behave in a sustained energy deficit?

I have three data points across nine months, which I hope is enough to see a trend. I suspect the usual explanation for this is wrong, or at least incomplete. I am…

hormones
hormones

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

13 questions
fatigue
fatigue

Tiredness on treatment: how much is energy deficit, how much is dehydration or electrolyte drift, how much is genuinely drug-attributable, and…

78 questions
nutrition
nutrition

Eating on a suppressed appetite: hitting nutritional targets inside a small energy budget, micronutrient risk, meal structure, and what the trial…

100 questions
asked by liam_bracken 6.9k · 5 months ago
12 votes 5 answers23k views
Do thyroid function tests shift enough during treatment to matter?

My laboratory results are from the same laboratory each time, drawn fasting, which I gather matters. The empirical answer seems settled. The explanation does not. If…

hormones
hormones

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

13 questions
thyroid
thyroid

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

23 questions
bloodwork
bloodwork

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

296 questions
asked by noor_alhassan 11k · 16 months ago
8 votes5 answers17k views
Which reproductive hormones move on substantial weight loss, and in what order?

My laboratory results are from the same laboratory each time, drawn fasting, which I gather matters. I would like help reading this properly rather than being told…

hormones
hormones

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

13 questions
pcos
pcos

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

9 questions
bloodwork
bloodwork

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

296 questions
asked by kelvin_lam 7.6k · 2.1 years ago
5 votes0 answers5.2k views
Is insulin resistance the mediator in PCOS, or is it the weight loss?

My laboratory results are from the same laboratory each time, drawn fasting, which I gather matters. This is one of those things that everyone repeats and nobody…

pcos
pcos

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

9 questions
t2dm
t2dm

Type 2 diabetes: glycaemic endpoints, the SURPASS and SUSTAIN programmes, dose ranges licensed for diabetes versus obesity, and interaction with…

22 questions
hormones
hormones

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

13 questions
asked by thabo_maseko 28k · 23 months ago
4 votes5 answers28k views
Does testosterone recover on weight loss alone in men?

I have three data points across nine months, which I hope is enough to see a trend. I would like to know whether this claim survives contact with evidence. If the…

hormones
hormones

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

13 questions
bloodwork
bloodwork

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

296 questions
clinical-trials
clinical-trials

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

745 questions
asked by tare_and_weigh 12k · 2.3 years ago
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