At times like this I feel incredibly grateful for these forums - this one in particular, so yes - I agree Outlier, we are adding value to the discussion I am sure - and this is a privilege for me to engage on this topic with you. And gowest has been dealing with the whole diet and body composition issue and providing us with this opportunity to talk about these very - crucial perhaps? - topics. Especially the value of low-carbing!
So I have my breakfast buns in the oven (low-carb, via the diet doctor's website), I've had more than a few cups of coffee, and I most importantly I have looked up citations, both on waist-height ratios, and on gowest's body and situation! Ready to go -
First my biases: I am a big proponent of Prof Taylor's personal fat threshold theory, and a big fan of Dr Fung, who also supports the personal fat threshold theory behind metabolic mahem as a 'target' of diabetes if you will, and how it affects the individual.
And the waist-height ratio fits nicely into that theory also. And and, In my own 'diabetes journey' and all the experimentation I have done - it fits. Hence my bias perhaps.
I am personally not a naturally small waisted person. I don't have a big differentiation between my hips and my waist - even when slim as a youth, or normal weighted as I am now. I went through my 30s, as a plump/overweight/sometimes fat person constantly assuring folks I was not in fact pregnant. (As my legs and arms remained relatively normal-weighted looking, and as a slim hipped person the fat went outwards, not sideways.) I currently have a waist-height ratio of .44, but have lived most of my years with type two post iniitial large weight loss with a ratio ranging between .47 and .49, even as a normal weighted person. I have written up on this elsewhere on the forum. I am a weight-loss resistant type two person, regarding remission.
Anyway - the study with great further references and readings included -
A systematic review of waist-to-height ratio as a screening tool for the prediction of cardiovascular disease and diabetes: 0·5 could be a suitable global boundary value
This systematic review collated seventy-eight studies exploring waist-to-height ratio (WHtR) and waist circumference (WC) or BMI as predictors of diabetes and CVD, published in English between 1950 and 2008. Twenty-two prospective analyses showed that WHtR and WC were significant predictors of...
pubmed.ncbi.nlm.nih.gov
On to gowest. I probably have a false feeling of intimacy with gowest12's physique! As I have been responding to his/her/their call of distress for a few months now (and been unable to affect poor gowest12's high level of anxiety, alas). In one of my attempts to reassure I did a health-calc (my favourite data tracking site) graphic show for him/her. (I have to say - I have absolutely no idea what gender gowest12 is! But I also have to say - it doesn't matter, except perhaps re anxiety over body-fat composition issues, as that can differ between the genders rather a lot in many cultures and societies.)
Anyway - through putting in gowest's data, I showed him/her that s/he was not close to too thin at all, and, in fact had a close to borderline, or indeed slightly over the border waist height ratio, which would fit the prediabetes thing. Hence my assumption that gowest, with either close to over a waist circumferance close to or over his/her height - s/he does in fact have the classic fat storage pathway for insulin resistance - which is around the waist. The graphics I prepared from 'health-calc' can be seen in the 'Thin outside fat inside' thread in this prediabetes section from late November last year to December.
And as mentioned in here - gowest, I believe, has a mother and a sister with T2D, so has this scary high risk factor to deal with. So I do believe gowest's anxiety is not entirely misplaced - just his/her trust in the necessity of lots of carbs for good health is misplaced.
Whew! Well. I have eaten two of those dietdoctor swedish breakfast buns (I can't imagine my life post diagnosis without them!), drunken a whole pot of coffee, and am now about to move on with my morning.
I hope the study citation is helpful! And I always love to share the health-calc site. Or at the very least declared my biases.