I see you included high dose vitamin D in your supplements. Have you ever had your labs pulled to find out where your actual vitamin D level is at? If you take too much vitamin d it piles up calcium deposits fast…
I take 5000iu daily and it puts me right into the 75th percentile range. But it can vary significantly per individual, and even race. If you spend a lot of time in the sun you could already have pretty high levels to begin with. Worse implications for smokers or anything inflammatory like that. There are quite a few studies, but will post a couple here for reference.
Vascular calcification (VC) as a manifestation of perturbed mineral balance, is associated with aging, diabetes and kidney dysfunction, as well as poorer patient outcomes. Due to the current limited understanding of the pathophysiology of vascular ...
pmc.ncbi.nlm.nih.gov
This article provides a comprehensive review of the biphasic role of vitamin D in vascular calcification, highlighting evidence from multiple animal models (mice, rats, goats, and pigs) where high-dose vitamin D administration led to significant arterial calcification. For example, it notes that in rats, sublethal doses (7.5 mg/kg) of vitamin D plus nicotine caused a 10–40 fold increase in aortic calcium content, resulting in calcification and destruction of medial elastic fibers, leading to arterial stiffness. In mice, single doses of 500,000 IU/kg/day induced severe aortic medial calcification within 7 days. The study also discusses mechanisms, such as elevated serum calcium and cholesterol levels, and the role of vitamin D receptor (VDR) signaling in promoting calcification when excessively stimulated. This source is robust due to its detailed analysis of experimental data and its discussion of both hypervitaminosis D and deficiency in the context of vascular health.
"Effect of Vitamin D Supplementation on Aortic Stiffness and Arterial Hemodynamics in People With Type 2 Diabetes and Hypertension" by Raed A et al., published in Journal of Clinical Endocrinology & Metabolism (2017).
This randomized, double-blind, placebo-controlled trial investigated high-dose vitamin D supplementation (100,000 IU monthly, equivalent to ~3,333 IU/day) in 130 patients with type 2 diabetes and hypertension over 12 months. The study found that high-dose vitamin D significantly increased aortic stiffness (measured by pulse wave velocity) and was associated with a trend toward increased vascular calcification markers, such as fetuin-A and matrix metalloproteinase activity. While the study did not directly measure arterial calcium content, the observed increase in aortic stiffness suggests a potential link to vascular calcification, consistent with preclinical data. The authors caution that excessive vitamin D may have adverse cardiovascular effects in high-risk populations.
This study is notable for its rigorous design and focus on a relevant human population, though direct evidence of calcification (e.g., via imaging) was not the primary endpoint.