I have been studying and applying nutrition for over 30 years now, and I have experimented with countless nutrients, to the point where I know their effects if I take too much. Based on the recommendations of Dr. Joseph Mercola and others of taking 5,000 IU of vitamin D per day, I recently OD’ed and had a miserable two weeks until the stuff finally left my body.
What happens to me when I take too much vitamin A or D is that I develop a “cold” during which time I have to blow my nose umpteen times a day, running through boxes of tissues, over a period of at least two weeks, depending on how long I’ve been taking the vitamin. Over the decades, I have done this experiment on a number of occasions with vitamin A, taking “only” the recommended daily allowance of about 5,000 IU. The same thing happens over and over again – out come the tissues, with the red, raw nose and so on. The very same unpleasant experience occurred with vitamin D at the level of 5,000 IU per day.
I broach this subject because I am willing to bet that there are others out there who have the same experience but who aren’t recognizing the cause. I would hate to see anyone suffering from this awful syndrome but continuing to take those amounts of vits. A and D. I would be very surprised, in fact, if there aren’t many people currently experiencing problems with too much vitamin D, because of all the recent push for supplementation.
As emphasized by Dr. Mercola – for whom I have tremendous respect – the best source of vit. D is sunlight, and I personally can attest that supplementing can be tricky. The fact that Mercola discusses how sunlight can destroy “excessive” amounts of vitamin D in your bloodstream means that there can be excessive amounts, obviously.
Moreover, I am certain from experience that taking handfuls of supplements causes hyperacidity, another subject I may broach in the future.
As they say, everything in moderation.