what is the function? also the effects of too little or too much of vitamin D
129955
Vitamin D is a fat-soluble hormone precursor that contributes to the maintenance of normal levels of calcium and phosphorus in the bloodstream. It is not precisely correct to describe it as a vitamin, but it might best be described as a conditional vitamin since human skin can manufacture it in some circumstances. It is also known as calciferol.
117230
Go to Barnes & Noble and get a book called "the Vitamin Bible." It's only 7.95, I use mine all the time! It tells you what every vitamin does, how much your body can absorb at a time, where to get it in natural foods, it just tells you so much. You can also look things up by sympton like "bad skin" and it will tell you what to take.
574717
I think the best vitamins are Centrum..They are available for all ages and different health types. Its great. We all need to take vitamins to supplement the vitamins (nutriants) that we miss in everyday meals. Happy Living!!
353440
Looking at your conditions, maybe you might want to try nutritional therapy to replenish your cells with the essential 46 vitamins. \n\nMy grandmother, 76 years old, who has been a diabetic patient for many years, and she is taking Spirulina (Certified Organic by Japan Health Food Association), and when the doctor diagnosed her, her blood sugar has dropped to normal level and she is feeling more energetic than last time.\n\nThe human requires 46 essential nutrients from the daily diet. Essential vitamins consist of vitamins, minerals, proteins (amino acids).\n\nEssential nutrients:\n\n1)Most are not produced by the body. ->100% sourced from our diet\n2)Many are broken down, lost or excreted daily. -> Required daily\n3)Should be consumed in balanced proportions.\n ->Nutritional intake should be balanced.\n4)Are interdependent and may not be able to function without the presence of others. -> The 46 essential nutrients should be presented at all times. \n\nLacking of 46 essential nutrients, Acidic body condition, unhealthy lifestyle will lead to unhealthy cells  Semi unhealthy state – headache, fatigue, shoulders ache  Long term will lead to high blood pressure, diabetes, cancer, leukemia, many 21st century common diseases.\n\nIf you want to know more information, you can email me at jaslinlee@yahoo.com I will glad to answer your enquiries.
84617
Your experience is interesting!  My first thought is as follows:  Vitamin D inhibits the renin-angiotensin system which plays a role in fluid balance (and therefore blood pressure) in the body.  You may have a genetic polymorphism (variation) creating a 'hypersensitivity' to vitamin D in this system.  However, if Vitamin D is really the cause of your thirst response, does exposure to sunlight also produce this effect in 5 or 10 minutes?  Lastly, I would expect it to take longer than 5 or 10 minutes for any vitamin D consumed to actually get into your blood stream.\n\nSo....if I haven't confused you by now, I guess the best answer I can offer is.... "that's a good question!"\n\nBest wishes and good luck!
12927
Vit D may cause increased absorbtion of lead, cadmium, aluminum, and cobalt; and radioactive isotopes such as strontium and cesium .\n\n"Ingestion of milligram quantities of vitamin D over periods of weeks of months can be severely toxic to humans and animals. In fact, baits laced with vitamin D are used very effectively as rodenticides."\n\nDOSAGE:\n\n1000 IU in 1 capsule.\nTake one capsule daily, or as recommended by a healthcare practitioner.\n\nBrands:\n\nSOLGAR VIT. D 1000 IU
292728
Exercises is the best thing you can do. You can walk, put your baby in the stroller then walk.You both could be benefited of the vitamin D from sun.Eat lots of fruits & veg and also see your doctor maybe you need iron, so to be sure pls. see your doctor. Take care and  have a great day.
319110
yes, vitamin D helps to absorb more calcium. u don't absorb all of the calcium u eat. however, when u look at food labels, if it says 30% calcium, that means  ur body absorbs 30% of the calcium that it needs for the day from the food. milk and some orange juice is fortified with vitamin D, but the best source is sunlight. it sounds weird but if u lit in the sun for 15 or 20 minutes every day, u will get all of the vitamin that u need for the day. 15 or 20 minutes also doesn't hurt ur skin. hope ur legs heal quickly.
168478
Disadvantage, overexposure to sunlight has been known o cause skin cancer. Easy fix wear sunscreen.\nAdvantage, Vitamin d helps with depression, makes you happier.
437206
excessive secretion of parathyroid hormone causes extra calcium , this is known as hyper parathyroidism or browns tumor \n\n     it cause imbalance in the calcium and phosphors levels , which results in changes in the  bone architecture, it causes tooth root resorption , loosening of teeth and sometimes tooth gets exfoliated .
509177
Your body is not used to most of the vitamins and minerals.  It may take you s few days to a week to start or stop feeling the effects of them, depending on why you are taking them.
345199
Cholecalciferol is a form of Vitamin D, also called vitamin D3. It is structurally similar to steroids such as testosterone, cholesterol, and cortisol (though vitamin D3 itself is a secosteroid).\n\n1g of pure vitamin D3 is 40 000 000 (40x106) IU, or in other words, one IU is 0.025 μg.\n\n\nVitamin D refers to a group of fat-soluble alcohols that contribute to the maintenance of normal levels of calcium and phosphorus in the blood. The two major forms of vitamin D are D2 (or ergocalciferol) and D3 or cholecalciferol. Vitamin D is required for the formation of strong bones and teeth. It is manufactured in the skin by the activation of a sterol (7-dehydrocholesterol) by ultraviolet radiation (sunlight). Vitamin D is classified as a vitamin because it is required for metabolism and deficiency can result in disease, including rickets and osteoporosis\nhttp://en.wikipedia.org/wiki/Vitamin_D#Overview
561576
most brand vitamins are o.k. just check to make sure that you are taking them at the right time of day\nmake sure your not getting to much of a vitamin such as vitamins a or k which have serious side effects in excess\nalso check the solublity of vitamins,absorption(fast,slow) etc.\nhigh endurance or marathon runners need to be more careful as the very sports they are involved in can cause problems with thier bodies other than just vitamin defiecencies such as with women high stress exercise can put enough stress on you to make you temporarily amenoric,loss of calcium stress fractures \nthis inculdes men as well you should look into consulting a sports medicine professional and/or a nutritionist
231248
Get out in the sun more!  If you're fair-skinned, 45 minutes a week is beneficial.  If dark-skinned, a few hours a week.  \n\nHere's other sources of D:\n\nCod liver oil (best source)\nFatty fish such as salmon, mackerel, tuna, sardines, herring\nVitamin D-fortified milk and cereal\nEggs\n\nWatch out taking supplements, you can OD with serious health consequences.
61563
It is a fact that when ultraviolet light touches your skin it causes your body to naturally produce vitamin D. Vitamin D has been linked to treat and/or prevent many diseases and conditions. For example, Dr. Holick Professor of Medicine, Dermatology, Physiology, and Biophysics at the Boston University Medical Center has found substantial evidence that the Vitamin D you get from tanning can help with the following diseases and conditions:\n\n    * Breast Cancer\n    * Colon Cancer\n    * Depression (Nonseasonal)\n    * Fybromyalgia\n    * High Blood Pressure\n    * Multiple Sclerosis\n    * Osteomalacia\n    * Osteoporosis\n    * Premenstrual Syndrome (PMS)\n    * Prostate Cancer\n    * Psoriasis\n    * Rheumatoid Arthritis\n    * Seasonal Affective Disorder (SAD)\n    * Type 1 Diabetes\n    * Type 2 Diabetes
120526
Too much calcium in your diet will lead to too much calcium in your bloodstream, a condition known as hypercalcemia.  There are symptoms and complications listed below, or go to the website for more info.\n\nSymptoms  \nSkeletal:\n    * Bone pain\n    * Loss of height\n    * Bowing of the shoulders\n    * Spinal column curvature\n    * Pathological fractures\nKidney:\n    * Flank pain\n    * Frequent urination\n    * Frequent thirst\nAbdominal:\n    * Pain\n    * Nausea and/or vomiting\n    * Poor appetite\n    * Constipation\nPsychological:\n    * Irritability\n    * Memory loss\n    * Apathy\n    * Depression\n    * Dementia\n    * Coma\nMuscular:\n    * Weakness\n    * Muscle twitches\n    * Muscle atrophy\n\nComplications    \nSkeletal\n    * Fractures\n    * Osteoporosis\n    * Bone cysts\nKidney\n    * Nephrocalcinosis (calcification of the kidney)\n    * Kidney stones\n    * Dehydration\n    * Kidney failure\nGastrointestinal\n    * Pancreatitis\n    * Peptic ulcer disease\n    * Hypertension\n\n\nRecommended Daily Calcium Intake\nInfants\nbirth-6 months - 400 mg / day\n6-12 months - 600 mg / day\nChildren\n1-5 years - 800 mg / day\n6-11 years - 800-1200 mg / day\nAdolescents & Young adults\n11-24 years - 1200-1500 mg / day\nWomen\n25-50 years - 1000 mg / day\nPregnant or lactating women - 1200-1500 mg / day\nPostmenopausal women on estrogen - 1000 mg / day\nPostmenopaural women not on estrogen - 1500 mg / day\nMen (25-50 years) - 1000 mg / day\nAll women and men above 65 - 1500 mg / day
292252
I've heard that too many vitamins can cause this to happen.  But you should contact a dr or pr.