Vitamin D Deficiency — clinical research review
For a number of reasons, many people aren’t getting enough vitamin D to stay healthy. This is called vitamin D deficiency.
Article 4 min read
John Cannell, MD
Vitamin D Sources — clinical research review
The two main ways to get vitamin D are by exposing your bare skin to sunlight and by taking vitamin D supplements. You can’t get the right amount of vitamin D your body needs from food.
Article 20 min read
Vitamin D and Physiology — clinical research review
When vitamin D comes into your body, it goes through all sorts of processes and is turned into different forms to be effective. In this article, we’ll teach you a little about this process, and how vitamin D works in the body.
Article 6 min read
Vitamin D Levels — clinical research review
Nearly every cell in the body contains a vitamin D receptor. Research shows vitamin D plays an important role in skeletal, immune, developmental and cardiovascular health. Thus, maintaining optimal vitamin D levels is vital for overall health.
Article 5 min read
Vitamin D and Acne — clinical research review
Acne is a disorder of the glands which lubricate the skin, called sebaceous glands. When these glands become blocked, bacteria overgrow and causes skin lesions.
Article 9 min read
Vitamin D and Toxicity — clinical research review
Although most people take vitamin D supplements without any problems, it’s possible to take too much. This is called vitamin D toxicity.
Article 6 min read
Vitamin D and Pharmacology — clinical research review
Pharmacology is the branch of medicine that is focused on the use and study of drugs and their actions.
Article 9 min read
Vitamin D and Melanoma — clinical research review
Melanoma is a type of cancer originating in the melanocytes. Melanocytes are cells that produce melanin, which gives skin its pigment (color).
Article 20 min read
Vitamin D and Parathyroid Glands
When most people think of calcium, they think it’s most important for bone health. But actually, calcium is most important for your nervous and muscular system.
Article 6 min read
Vitamin D and Pregnancy — clinical research review
Getting the right nutrients and eating well when you’re pregnant or breastfeeding is important for your baby’s growth and development.
Article 8 min read
Vitamin D and Asthma — clinical research review
Asthma is a lifelong lung disease that makes it difficult to breathe. There are tubes or airways, which carry air to and from the lungs to the mouth and nose.
Article 15 min read
Vitamin D and Colorectal Cancer
Colorectal cancer is a malignant tumor, which is caused by a group of cancerous cells growing in either the colon or rectum.
Article 16 min read
Vitamin D and Vitamin K — clinical research review
Vitamin K describes a family of compounds with a common chemical structure. Review of vitamin D's interaction with vitamin K and combined supplementation.
Article 7 min read
Vitamin D and Gastric Cancer — clinical research review
Stomach (gastric) cancer is a moderately important cause of disease and death. Review of vitamin D's potential role in prevention and disease progression.
Article 11 min read
Vitamin D and Congestive Heart Failure (CHF)
Heart failure is also called congestive heart failure (CHF). CHF occurs when the heart can no longer pump enough blood to the rest of the body.
Article 9 min read
Vitamin D and Coronary Heart Disease (CHD)
Coronary heart disease (CHD) is one of several cardiovascular diseases. The others include stroke, congestive heart failure, and peripheral artery disease.
Article 19 min read
Vitamin D and Leukemia — clinical research review
Leukemia is a cancer of the blood or bone marrow. The disease causes an abnormal increase of white blood cells. There are many types of leukemia.
Article 8 min read
Vitamin D and Ovarian Cancer — clinical research review
Ovarian cancer is cancer that starts in the ovaries. As it has few symptoms at first, it is often diagnosed at more advanced stages.
Article 11 min read
Vitamin D and Tuberculosis — clinical research review
Tuberculosis is a respiratory illness that usually affects the lungs, but can also infect the kidney, spine, or brain. Tuberculosis can be either dormant or active.
Article 13 min read
Vitamin D and Respiratory Infections
Respiratory infections are any infection in the throat, sinuses, airways, or lungs. The respiratory tract is the part of the body that is involved with breathing.
Article 15 min read
Vitamin D and Hypersensitivity
For most people, supplementing with vitamin D is a safe and healthy practice. Review of rare hypersensitivity reactions, contraindications, and dose adjustments.
Article 4 min read
Vitamin D and Depression — clinical research review
We all feel fed up, miserable and sad at certain times in our lives. Most of the time, these feelings last for a few days, or maybe a week,
Article 13 min read
Vitamin D Testing — clinical research review
Having blood tests to measure the amount of vitamin D in your blood is the only way to know if you’re getting enough vitamin D or not. The blood test you need is called a 25(OH)D blood test.
Article 14 min read
Vitamin D and Minerals — clinical research review
The way that vitamins and minerals work in your body is interconnected. How well vitamin D works depends on the amount of other vitamins and minerals that are present in your body. The other vitamins and minerals needed to help vitamin D work well are called cofactors.
Article 9 min read
What is Vitamin D? — overview and clinical context
Vitamin D is important for good overall health, strong bones, and immune function. Overview of synthesis, sources, deficiency risks, and supplementation guidance.
Article 5 min read
Vitamin D and Autism — clinical research review
As the reader will see below, there is compelling evidence that low vitamin D status during pregnancy is a major cause of autism,
Article 14 min read
Vitamin D and Eczema — clinical research review
Eczema, also known as atopic dermatitis, is a chronic skin disorder that causes inflammation and red, dry, rough, and itchy skin.
Article 14 min read
Vitamin D and Multiple Myeloma
Multiple myeloma (MM) is a cancer of the plasma cells. They are white blood cells that normally produce antibodies.
Article 7 min read
Vitamin D and Hypertension — clinical research review
Hypertension, also known as high blood pressure, is a medical condition in which the blood pressure in the arteries is elevated.
Article 12 min read
Vitamin D and Lung Cancer — clinical research review
Lung cancer is a cancer starting in the lungs. Lung cancer is the leading cause of cancer death in the United States.
Article 12 min read
Vitamin D and Breast Cancer — clinical research review
The answer is a resounding YES, not only because there are positive clinical trials showing that vitamin D prolongs life,
Article 19 min read
Vitamin D and Renal Cancer — clinical research review
Each year, kidney (renal) cancer affects approximately 61,000 Americans and kills about 13,000. Review of vitamin D research on kidney cancer outcomes.
Article 11 min read
Vitamin D and Cervical Cancer — clinical research review
Cervical cancer starts on the surface of the cervix. This is the lower part of the uterus (womb), which opens at the top of the vagina.
Article 7 min read
Vitamin D and COPD — clinical research review
Chronic obstructive pulmonary disease (COPD) is one of the most common lung diseases. There are two main forms of COPD:
Article 12 min read
Vitamin D and Cognitive Impairment
Cognitive dysfunction is defined as unusually poor mental function. This causes confusion, forgetfulness and difficulty concentrating.
Article 10 min read
Vitamin D and Dental Caries — clinical research review
Dental caries, also known as tooth decay, is a tooth infection caused by bacteria that leads to a loss of the hard tissues of your teeth.
Article 11 min read
Vitamin D and Fibromyalgia — clinical research review
Fibromyalgia is a chronic syndrome of body-wide pain. Tender points are the joints, muscles, tendons, and other soft tissues.
Article 6 min read
Vitamin D and Endometrial Cancer
Endometrial cancer is cancer that starts in the endometrium, the lining of the uterus (womb). Each year, endometrial cancer affects approximately 46,000 U.S.
Article 11 min read
Vitamin D and Parkinson's Disease
Parkinson’s disease (PD) is a chronic progressive neurological disease. It is linked to decreased production of dopamine, a nerve transmitter.
Article 14 min read
Vitamin D and Periodontal Disease
Periodontal disease (PD) is a chronic gum condition. Bacteria cause the gums to swell, redden, and bleed. Connective tissue holding the teeth into the jaw bone may become damaged.
Article 10 min read
Vitamin D and Prostate Cancer — clinical research review
The prostate is a small gland found in men. It is about the size of a walnut and is part of the reproductive system.
Article 14 min read
Vitamin D and Preeclampsia — clinical research review
Preeclampsia is a condition which occurs only during pregnancy and a short post-pregnancy period. It causes increased blood pressure and protein in the urine.
Article 12 min read
Vitamin D and Sepsis — clinical research review
Sepsis is a severe illness. It is caused by a bacterial infection that begins anywhere in the body and moves to the blood. The bloodstream is soon overwhelmed by bacteria.
Article 10 min read
Vitamin D and Alzheimer's Disease
Alzheimer’s disease (AD) is a condition that causes memory problems and other cognitive functions that cause unpredictable changes in behavior.
Article 13 min read
Vitamin D for Professionals — clinical research review
The marker for vitamin D status is 25-hydroxyvitamin-D [25(OH)D], a metabolite of vitamin D3. Review of measurement methods, reference ranges, and interpretation.
Article 9 min read
Vitamin D and Anaphylaxis — clinical research review
Anaphylaxis is a very severe hypersensitivity to an allergen. Allergens are any substances that cause allergies. This condition affects many systems of the body at the same time.
Article 5 min read
Vitamin D and Osteoporosis — clinical research review
Osteoporosis is a condition where you lose too much bone or don’t make enough bone to replace the bone that you normally lose.
Article 18 min read
Vitamin D and IBD — clinical research review
Inflammatory bowel disease is a chronic disease that causes inflammation in all or part of the digestive tract.
Article 14 min read
Vitamin D and Anemia — clinical research review
Anemia occurs when the body has a low number of red blood cells (RBCs). These cells carry oxygen throughout the body. Fewer RBCs limit the body’s oxygen level.
Article 6 min read
Vitamin D and Influenza — clinical research review
Yes, you should — studies show that vitamin D helps reduce the risk of colds and flu. Review of clinical evidence on immune response and seasonal infection.
Article 17 min read
Vitamin D and Type I Diabetes — clinical research review
Type 1 diabetes is an autoimmune disease. It is a condition where your own immune system attacks certain cells called beta-cells.
Article 13 min read
Vitamin D and AIDS (HIV) — clinical research review
Human immunodeficiency virus (HIV) causes acquired immunodeficiency syndrome (AIDS). The immune system begins to fail. This leads to life-threatening infections.
Article 16 min read
Vitamin D and Multiple Sclerosis
Multiple sclerosis is a condition where the body’s immune system attacks the nerves in the brain and spinal cord.
Article 15 min read
Vitamin D and Type II Diabetes
Type II diabetes is a condition in which the body has a hard time managing sugar. Review of clinical research on vitamin D status and insulin sensitivity.
Article 16 min read
Vitamin D and Lupus — clinical research review
Systemic lupus erythematosus (SLE), or lupus, is a chronic disease that affects many systems in the body, such as the skin, heart and muscles.
Article 15 min read
Vitamin D and Esophageal Cancer
Esophageal cancer is a moderately important cause of disease and death. In the United States each year, it affects about 17 thousand people and kills approximately 15 thousand.
Article 11 min read
Vitamin D and Pancreatic Cancer
Pancreatic cancer is cancer of the pancreas, the organ that produces insulin. Approximately 44,000 people in the United States are diagnosed with cancer of the pancreas each year.
Article 12 min read
Vitamin D and Pneumonia — clinical research review
Pneumonia is a lower respiratory infection that affects the lungs. Pneumonia can usually be treated at home in a few weeks.
Article 12 min read
Vitamin D and Rickets — clinical research review
Rickets is a condition that affects the development of bones in children. It causes soft weak bones, which can become bowed or curved.
Article 19 min read