Structural relationship of vitamin D 3 (cholecalciferol) and vitamin D 2 (ergocalciferol) with their respective provitamins, cholesterol, and a classic steroid hormone, cortisol (see inset box). The two structural representations presented at the bottom for both vitamin D 3 and vitamin D .2 are equivalent; these are simply different ways of drawing the same molecule. It is to be emphasized that vitamin D 3 is the naturally occurring form of the vitamin; it is produced from 7-dehydrocholesterol, which is present in the skin, by the action of sunlight (see Figure 2). Vitamin D 2 (which is equivalently potent to vitamin D 3 in humans and many mammals, but not birds) is produced commercially by the irradiation of the plant sterol ergosterol with ultraviolet light.
I was misdiagnosed and have been fighting Lyme, Babesia and Bartonella for 19 years. I nursed both my children and gave it to them also. I almost died but I was lucky enough to be diagnosed properly at the last minute and have been in treatment on and off for ten years.
Thank you for writing about tick-borne illnesses. Unfortunately, the CDC and other groups such as the IDSA have done much damage to the issue of patient care and the testing, diagnosis and treatment has been a debaucle. These doctor groups have known about ticke-borne illnesses for a long time and have put politics before patients. I’d encourage you to look deeper into the politics and corruption that has made being a patient in both the USA and Canada a nightmare. Please contact other groups like or for information that Lyme literate doctors and researchers have been putting out for two decades and which groups like the CDC and IDSA have ignored. Those studies are out of respected universities like Stanford and Harvard, along with a multitude of articles from respected medical journals. The politics of Lyme would be a great next book for you I think. You’ll be amazed at what you find once you start digging. The movie ‘Under Our Skin’ is a good place to start. Thank you for writing about this issue that has affected my family for so long and I do hope you follow up.