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https://drmalcolmkendrick.org/2017/12/09/what-causes-heart-disease-part-xlii-forty-two/
Another "chicken and egg" hypothesis about the causes of heart attacks. Interesting bit:
"
In all the dietary studies I have seen, we are talking about increased, or reduced, risks in the order of 1.12, or 0.89. Which means a twelve per cent increased risk, or an eleven per cent reduced risk. These figures may just reach statistical significance, but they are so small as to be, to all intents and purposes, completely irrelevant.
On the other hand, a thirteen-fold increase in risk can be written another way. This is a 1,300% increase in risk. Compare this to anything to do with diet, or raised cholesterol, or blood pressure, or blood sugar or – any of the other mainstream risk factors. It is like comparing Mount Everest to a mole hill.
Yet, and yet, attempting to divert attention, and discussion, away from diet, or cholesterol, or sub-fractions of cholesterol, or suchlike seems an impossible task. People may say that they cannot see how stress can cause CVD. To which I say, every single step has been worked out, many times, by many different people.
Chronic stress → dysfunction of the hypothalamic pituitary adrenal axis (HPA-axis) → sympathetic overdrive + raised stress hormones → metabolic syndrome (raised BP, raised blood sugar, raised clotting factors, raised cortisol, raised all sorts of things) → endothelial damage + increased blood clotting → plaque formation and death from acute clot formation.
And if you want to close this loop further, stress also increases LDL levels, in some studies by over 60%5. So, when you see raised LDL, in association with increased CVD, it is not the LDL causing the CVD. It is stress, causing both.
"
My emphasis at the bottom of the quote.
Makes you (or at least me) think, doesn't it!
Another "chicken and egg" hypothesis about the causes of heart attacks. Interesting bit:
"
In all the dietary studies I have seen, we are talking about increased, or reduced, risks in the order of 1.12, or 0.89. Which means a twelve per cent increased risk, or an eleven per cent reduced risk. These figures may just reach statistical significance, but they are so small as to be, to all intents and purposes, completely irrelevant.
On the other hand, a thirteen-fold increase in risk can be written another way. This is a 1,300% increase in risk. Compare this to anything to do with diet, or raised cholesterol, or blood pressure, or blood sugar or – any of the other mainstream risk factors. It is like comparing Mount Everest to a mole hill.
Yet, and yet, attempting to divert attention, and discussion, away from diet, or cholesterol, or sub-fractions of cholesterol, or suchlike seems an impossible task. People may say that they cannot see how stress can cause CVD. To which I say, every single step has been worked out, many times, by many different people.
Chronic stress → dysfunction of the hypothalamic pituitary adrenal axis (HPA-axis) → sympathetic overdrive + raised stress hormones → metabolic syndrome (raised BP, raised blood sugar, raised clotting factors, raised cortisol, raised all sorts of things) → endothelial damage + increased blood clotting → plaque formation and death from acute clot formation.
And if you want to close this loop further, stress also increases LDL levels, in some studies by over 60%5. So, when you see raised LDL, in association with increased CVD, it is not the LDL causing the CVD. It is stress, causing both.
"
My emphasis at the bottom of the quote.
Makes you (or at least me) think, doesn't it!
