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Yesterday I managed to get my LDL down from 3.6 to 3.1 in next to no time. Since LDL, the so-called 'bad' cholesterol, is one of the figures your doctor may use to frighten you into statins, you may want to see if you can get yours down as easily.
LDL can be directly measured, but since this is expensive it is usually estimated. It is done (mostly) using the Friedewald Method where LDL
in UK (mmol/L) = TC - HDL - (trigs/2.19)
in US (mg/dl) = TC - HDL - (trigs/5)
It is known that at large levels of trigs the formula becomes unreliable. It has also been found that at low levels of trigs it is also unreliable.
This 2012 study looked at various methods for more accurately estimating LDL on 10,664 fasted individuals. The table below shows how the proposed formula (LDL = [TC - HDL] x 0.75) outperforms all other methods in 11 out of 12 sub-sections. Only where trigs exceed 2.11 mmol/L does the Teerakanchana formula fractionally beat the proposed new formula into second place. However the new formula clearly outperforms the Friedewald.
Did you spot the defining feature of this new formula? It ignores trigs. Since trigs rise after eating/drinking, their inclusion would affect any LDL calculation. Compare my results from 5/17 and 10/17
TC 5.2 / 5.0
HDL 1.1 / 1.25
Trigs 1.1 / 1.7 (the latter non-fasting as test unexpected)
LDL 3.6 / NOT GIVEN
The new formula brings my 5/17 LDL from 3.6 to 3.1.
If I assume fasting trigs of 1.1 the 10/17 test would give me an LDL of 2.98. Under the new formula it would be 2.8.
Check your own figures. You may be in for a nice surprise.
Geoff
http://journals.sagepub.com/doi/full/10.1258/acb.2012.011259
http://journals.sagepub.com/na101/h...ges/large/10.1258_acb.2012.011259-table1.jpeg
LDL can be directly measured, but since this is expensive it is usually estimated. It is done (mostly) using the Friedewald Method where LDL
in UK (mmol/L) = TC - HDL - (trigs/2.19)
in US (mg/dl) = TC - HDL - (trigs/5)
It is known that at large levels of trigs the formula becomes unreliable. It has also been found that at low levels of trigs it is also unreliable.
This 2012 study looked at various methods for more accurately estimating LDL on 10,664 fasted individuals. The table below shows how the proposed formula (LDL = [TC - HDL] x 0.75) outperforms all other methods in 11 out of 12 sub-sections. Only where trigs exceed 2.11 mmol/L does the Teerakanchana formula fractionally beat the proposed new formula into second place. However the new formula clearly outperforms the Friedewald.
Did you spot the defining feature of this new formula? It ignores trigs. Since trigs rise after eating/drinking, their inclusion would affect any LDL calculation. Compare my results from 5/17 and 10/17
TC 5.2 / 5.0
HDL 1.1 / 1.25
Trigs 1.1 / 1.7 (the latter non-fasting as test unexpected)
LDL 3.6 / NOT GIVEN
The new formula brings my 5/17 LDL from 3.6 to 3.1.
If I assume fasting trigs of 1.1 the 10/17 test would give me an LDL of 2.98. Under the new formula it would be 2.8.
Check your own figures. You may be in for a nice surprise.
Geoff
http://journals.sagepub.com/doi/full/10.1258/acb.2012.011259
http://journals.sagepub.com/na101/h...ges/large/10.1258_acb.2012.011259-table1.jpeg