Quote:Strangely, as soon as the cluster headaches stopped, the atrial fibrillation started.
Sounds familiar to me...
I have CH, have had a major AF event and now take a beta blocker (Atenolol) for BP and heart rhythm problems caused by Verapamil (heart block) many years ago during a drug trial of Verapamil. I have right sided pain of 35+ years with no side-shift and have had a 24 hr holter monitor ECG conducted with no remarkable findings, but that is just one person. I also have sinus cysts, and like any other infection, they are an immune system consumer and rapidly draw on my D3 reserves and CH returns.
One thing to consider when using the regimen is serum Calcium level. Your clue is in the quote above.
Maybe when adequate 25(OH)D levels were reached, hypercalcemia was also reached, this happened to me.
I'm sure Batch can elaborate far more specifically than I, when he returns.
I did pass onto Batch a few years ago, a study that showed calcium supplementation can interfere with Beta Blockers and stop them from working. Unfortunately I cannot locate that 1970s study now. This happened to me and my heart rhythm suffered. I ceased calcium supplements, instead making up my calcium requirement through diet, which it turns out was already adequate up to RDI/RDA without calcium supplements.
When I was ramping up the regimen about 4 years ago, I became hypercalcemic. Hypercalcemia is not fun and wreaked havoc with my heart rhythm, landed me in hospital. It seems that when insufficient Magnesium is taken calcium may be pulled from bone at a rate greater than typical Osteoblast/Oteoclast activity, or bone turnover. Whether through supplementation or otherwise, if serum calcium levels are measured and found to be above normal range, I find the heart rhythm trouble can again begin for me.
Serum Calcium is a test I now routinely take alongside 25(OH)D levels, lest I should again run into heart trouble.
If my calcium level is too high, out of range, then it seems to do the same thing as calcium supplementation did, it interferes with the Atenolol I take and it becomes less effective, BP and HR rise and it is no fun at all.
As for the link between AF and CH, well I don't see one in the study directly. I have spoken to my headache specialist about heart and CH at length and another condition was tested for and do not have. Patent Foramen Ovale, seems to have a relationship to Migraine only.
DW Dodick has a paper on it here:
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FWIW, my headache specialist said he had seen PFO in cluster patients, had it remedied by a Cardio-surgeon and CHers reported absolutely no difference, an observation he made across hundreds of CH patients, not a study I can locate unfortunately. not every clinical observation makes it to clinical trial, so a study I cannot provide.
Maybe it is worth investigating medical imaging of the heart to see if there are any anatomical abnormalities.
Perhaps a serum calcium test would reveal something.
Just a thought...