Hi
@CathP - I'm Dave from CholesterolCode.com. I friend pinged me about this thread to see if I could help out.
- You should know that many doctors consider high levels of cholesterol alone to be sufficient to diagnose FH ("Only someone with FH could have those numbers..."). This is highly unfortunate as FH is, in fact, genetic and should only diagnosed as such.
Exactly my experience, went from normal cholesterol levels pre-low carb to sky high TC & LDL, TG & HDL were really good though. Doctors response - you have FH.
- Many on a low carb diet will see a dramatic rise in their cholesterol numbers that can be consistent with the levels seen in FH (like me), and we are typically referred to as "hyper-responders". However, I've since learned there are potentially mechanistic reasons for this, particularly in individuals with lower body fat and higher than average energy demands (many athletes on low carb have very high numbers). Thus, it makes a lot of sense that children on a low carb diet would be more likely to have higher cholesterol numbers.
Again, I can really relate to this. My body fat is <10%, very lean LADA diabetic.
I made a layperson-friendly guide that explains these basics of lipidology here:
http://cholesterolcode.com/a-simple-guide-to-cholesterol-on-low-carb/
- I'm starting to call this above pattern, Lean Mass Hyper-responder (LMHR) and I wouldn't be surprised if many children who adopt a low carb diet would have higher cholesterol given it "rides along" with the primary energy source on a low carb diet (triglycerides) in LDL particles (Low Density Lipoproteins). When you have lower body fat (lower adipose stores), lower carb intake (lower glycogen stores, relatively), and high energy demands -- it makes sense that your body would circulate more energy from fat, resulting in higher cholesterol.
This makes a lot of sense. My body fat is <10%, glycogen stores have to be low as I eat very low carb 30-50g per day.
- But the question of risk is separate. Higher circulating cholesterol doesn't automatically convert to higher atherosclerosis, but that's a much, much longer post to fully discuss. Obviously I'm currently unconvinced my own high cholesterol levels are clearly a risk factor given what I have researched to this point and have discovered with my own experiments. This isn't to say I'm certain it isn't a risk, only that I'm unconvinced. I usually put it this way: On a 10-scale of concern, I was a 9 when I first found out about my cholesterol, now I'm closer to a 5 -- but I'm *not* a 0.
Yep, I am less concerned too, but certainly it is still on my mind. I did get another doctors opinion and further cholesterol related tests, e.g. oxidised LDL, small dense LDL, also CRP, and all were very good so I felt better. The second doctor advised against taking statins and hence I haven't touched them so far.
- I completely understand why you'd want a T1D on a low carb diet and I know many who have had a lot of success in this. If you haven't already, check out Type 1 Grit on Facebook.