- Vitamin D-3 is a hormone most of the developed world is probably lacking, and how
- a deficiency in Vitamin D-3 may have put me into a deep depression, which seems to have improved greatly since I started supplementing a more substantial dose of Vitamin D-3.
|Sample Date||Result||Average Daily Change|
|October 8, 2014||27.15 ng/mL||/|
|November 12, 2014||49.71 ng/mL||+0.64 ng/mL/day|
|December 12, 2014||58.71 ng/mL||+0.30 ng/mL/day|
I have three hypotheses for why the average daily change has dropped off towards the third test:
- Body adjusts. Perhaps the body makes use of more Vitamin D-3 when more is available in long-term storage. This would be excellent news - it would mean a person can continue to take a consistent amount without worrying too much about overshooting the 60 - 80 ng/mL range. As long as the intake is within reason, the body will use more if more is available.
- Pill inconsistency. Perhaps reported pill content is unreliable. All my intake of Vitamin D-3 has been in the form of pills from GNC, but the pills have come in a variety of different form factors. I began with 7 x 1,000 IU per day; then I had to switch to 17 x 400 IU because a larger pill was not available locally; then I switched to 1 x 5,000 IU + 2 x 1,000 IU when Jana returned from a trip to the US, and brought a supply from GNC there. If pill content is inconsistent and unreliable, that would be bad news; staying in the 60 - 80 ng/mL range would require frequent blood testing.
- Daily variation. Perhaps there are daily fluctuations in metabolism that might cause results to vary by a large amount, depending on when the sample is taken.
I should note that my average mood and enthusiasm have improved consistently with D25OH blood level. There are differences from day to day, but I now feel much more enthusiasm for work and general activity than e.g. last month. Since this is not a blind study, it continues to be impossible to rule out placebo, but the improvement has been consistent with my long-term level climbing up.