Most often, it's this time of the year, after a winter without getting much light/sun. Sandy, [above].. got to the point with her greenhouse. We need more real sunlight. There was a talk about light, in 1987, Billy Meier & ET Quetzal, scroll down to just below 156 in link. some of the talk... through the changed lighting conditions and, thus, through unsuitable, artificial light. Stomach and intestinal troubles as well as serious stomach and intestinal diseases can be the result, as well as bad depressions and aggressiveness and also dizziness, nausea, blurred vision, and a general functional impairment of the immune system. Here is a link that might be useful: Contact Notes

Geritol (liquid vitamin) is made from Brewer's yeast (by product of beer-industry). I love taking Brewer's yeast since it's a natural food-product, rather than refined chemicals. People give NOW's brewer's yeast thumb-down due to its bitterness, but U of Michigan Medical website stated that for brewer's yeast to be effective, it should be bitter. I mix 1/2 Tablespoon of brewer's yeast with 1 cup of milk, plus 1 heaping tablespoon of buckwheat honey, and it tastes great. It really stabilized my blood sugar, and helped me to lose weight & plus extra energy. I can see why many people report increased energy with vitamins or brewer's yeast (high in B-complex, chromium and selenium). Have been taking brewer's yeast for 1 year .. hair is super thick, at 52-year-old .. it really help with healthy hair. I took Brewer's yeast initially to repel bugs & mosquitoes when I worked in the garden ... but like the extra-energy & less cravings that I kept doing it even in the winter. Folks give brewer's yeast to their pets for shiny & smooth coat of hair, plus to repel fleas. Below is U. of Maryland Medical Center on Brewer's yeast, at $8 per pound, it's a lot cheaper than vitamins & plus help to prevent colds & flu: http://umm.edu/health/medical/altmed/supplement/brewers-yeast Below link lists caution if you take medications along with brewer's yeast Brewer's yeast contains a large amount of tyramine, a substance that can interact with MAOIs and cause a hypertensive crisis Source: Possible Interactions with: Brewer's Yeast | University of Maryland Medical Center http://umm.edu/health/medical/altmed/supplement-interaction/possible-interactions-with-brewers-yeast#ixzz3Zmk9uIfc

Chisue, I've always been an outdoors girl and still am. I've never been good about sunscreens either since I don't really burn other than a couple of tropical vacations. The year my endo was asking about my sun exposure, I thought she was easing into delivering a real scolding since I was so tan that summer, saw her in July that year. She was more interested in my Vit D level which was low even with my bronzy skin and a good diet. So you never know, unless tested. DH works outdoors and is rarely in his office, he spends more daylight hours outside than in. His lab report from his annual physical about 10 years ago showed him at the lowest number possible before dropping below the 'normal' range for Vit D. His doctor didn't call attention to it but DH began taking the same amount Vit D that I do (1500 - 2000 iu) and he's been solidly within the normal range each year since.

Glad I can help, but I am by no means an expert. I've just been doing a lot of reading and research on primary hyperthyroidism. I'm not at all familiar with probenecid, so I just did a Google search, and read a few things. What you described -- "not able to think, process normally..." doesn't appear to be listed as even a rare side effect, much less a common one. BUT, it is a side effect of hyperparathyroidism. The thyroid and the parathyroids are both part of the endocrine system, and the parathyroids are located on the back side of the thyroid, but that's the extent of their relationship to each other. I don't think treatment of your thyroid would have affected your parathyroids, but I am not a physician, much less a specialist in endocrinology, so you really should consult with an endocrinologist. What I do know is that a person's Vitamin D level and PTH level (as well as calcium level) are related. As I said in an earlier post, your parathyroid glands control the amount of calcium in your system. Vitamin D helps your system absorb the calcium. When the levels get out of whack, calcium is pulled from your bones. I had first complained to my doctor that I had started suffering from "head sweats." I would be getting ready for work in the morning -- and it could be the middle of Winter and really, really cold -- and suddenly my head would start to sweat profusely. It would drip down my face (making it difficult to put on makeup) and into my eyes (that burns!), and was just generally frustrating and uncomfortable. I also noticed that I was losing a lot more hair than normal. So, I was doing Google searches on what could cause head sweats and hair loss, and I was reading about low Vitamin D. The low Vitamin D made sense to me because I'm not out in the sun a lot, and when I am, I have on SPF 50 sunscreen because I've had skin cancer in three places on my face. I was also feeling "less than normal." I had decreased energy, had problems remembering things (none of my relatives has ever had Alzheimer's but I was beginning to think that I was going to be the first), had frequent headaches, etc. So, I started researching and reading. And what I came up with was that I appear to have all of the signs/symptoms of primary hyperparathyroidism. (There is also secondary hyperparathyroidism, where the calcium level is normal when Vitamin D and PTH are high, but that definitely isn't me.) And, as I also said in an earlier post, the parathyroid.com web site (Norman Parathyroid Center in Tampa, Florida) has a wealth of good information, but I am adamantly opposed to doctors who make you feel that they are the only good doctor this side of Heaven. Dr. Norman may be (and by all accounts is) an excellent doctor and parathyroid surgeon, but he and his Center are not the only game in town. I am in northern California, and will go to UCLA to have surgery by Dr. Michael Yeh, who has excellent credentials, and does an average of 6 parathyroidectomy surgeries every day (and I think that's more than Dr. Norman does on a daily basis).