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Calcium, the most abundant mineral in the body, is found in some foods, added to others, available as a dietary supplement, and present in some medicines (such as antacids). Calcium is required for muscle contraction, blood vessel expansion and contraction, secretion of hormones and enzymes, and transmitting impulses throughout the nervous system. The body strives to maintain constant concentrations of calcium in blood, muscle, and intercellular fluids, though less than <1% of total body calcium is needed to support these functions.

The remaining 99% of the body's calcium supply is stored in the bones and teeth where it supports their structure. Bone itself undergoes continuous remodeling, with constant resorption and deposition of calcium into new bone. The balance between bone resorption and deposition changes with age. Bone formation exceeds resorption in growing children, whereas in early and middle adulthood both processes are relatively equal. In aging adults, particularly among postmenopausal women, bone breakdown exceeds formation, resulting in bone loss that increases the risk of osteoporosis over time.
Frozen meals have better diet quality than QSR meals, shows research

Frozen meals have better diet quality than QSR meals, shows research

New data presented today indicate that consumers of frozen meals had higher daily intakes of dietary fiber, potassium, calcium and protein, and lower daily intakes of calories and saturated fat than consumers of quick service restaurant (QSR) meals. [More]
Anthropological study sheds light on the eating habits of Roman gladiators

Anthropological study sheds light on the eating habits of Roman gladiators

Roman gladiators ate a mostly vegetarian diet and drank ashes after training as a tonic. These are the findings of anthropological investigations carried out on bones of warriors found during excavations in the ancient city of Ephesos. [More]
Gold Crest Care Center offers key tips on proper nutrition for seniors

Gold Crest Care Center offers key tips on proper nutrition for seniors

Gold Crest Care Center, a trusted NYC nursing home, urges senior citizens and their families to learn the basics of proper nutrition for senior citizens. The nursing facility's staff has created a short list of key tips for families and seniors looking to improve their mental and physical health through dietary changes. [More]
Scientists combine new type of nanoparticle with photodynamic therapy to kill cancer cells

Scientists combine new type of nanoparticle with photodynamic therapy to kill cancer cells

An international group of scientists led by Gang Han, PhD, at the University of Massachusetts Medical School, has combined a new type of nanoparticle with an FDA-approved photodynamic therapy to effectively kill deep-set cancer cells in vivo with minimal damage to surrounding tissue and fewer side effects than chemotherapy. This promising new treatment strategy could expand the current use of photodynamic therapies to access deep-set cancer tumors. [More]
Bone mineral density not linked to musculoskeletal pain

Bone mineral density not linked to musculoskeletal pain

Bone mineral density does not contribute to musculoskeletal pain, researchers report in findings that shed light on the controversy over whether osteoporosis is a painless disease. [More]
Magnesium essential to the activity of vitamin D

Magnesium essential to the activity of vitamin D

Extensive research has shown that vitamin D deficiencies play a major role in the development of dozens of diseases, including breast, prostate and colon cancer, as well as diabetes, heart disease, arthritis, osteoporosis, psoriasis and mental illness. [More]
Survey finds that 49% of post-menopausal women do not take bone health supplements

Survey finds that 49% of post-menopausal women do not take bone health supplements

Make no bones about it; post-menopausal women are well aware of the risks of brittle bones and fractures; however, a national survey of women taken for AIDP, Inc., the supplier of KoACT, a patented combination of collagen and calcium, found that almost half (49%) are not taking any bone health supplement to address this major health issue. [More]
Experiments show that 'unsung' cells are crucial to the process of bone loss caused by bone disorder

Experiments show that 'unsung' cells are crucial to the process of bone loss caused by bone disorder

Experiments in mice with a bone disorder similar to that in women after menopause show that a scientifically overlooked group of cells are likely crucial to the process of bone loss caused by the disorder, according to Johns Hopkins researchers. [More]
Researchers find potential new way to better control immune-mediated diseases

Researchers find potential new way to better control immune-mediated diseases

Researchers at University of California, San Diego School of Medicine have discovered that T-cells - a type of white blood cell that learns to recognize and attack microbial pathogens - are activated by a pain receptor. [More]
New study suggests that family meals may be protective against obesity

New study suggests that family meals may be protective against obesity

Increasing rates of adolescent obesity and the likelihood that obesity will carry forward into adulthood, have led to various preventive initiatives. It has been suggested that family meals, which tend to include fruits, vegetables, calcium, and whole grains, could be protective against obesity. [More]
Study uncovers new pathway for treating high blood pressure, heart failure

Study uncovers new pathway for treating high blood pressure, heart failure

New research by scientists at the University of Maryland School of Medicine and the Ottawa Heart Institute has uncovered a new pathway by which the brain uses an unusual steroid to control blood pressure. [More]
Recommendations for nutritional rickets announced

Recommendations for nutritional rickets announced

New consensus recommendations for the management of nutritional rickets include universal vitamin D supplementation during the first year of life. [More]
NIH announces winners of BRAIN Initiative awards

NIH announces winners of BRAIN Initiative awards

Today the National Institutes of Health (NIH) announced their first round of BRAIN Initiative awards, and six teams from the Massachusetts Institute of Technology (MIT) are among the recipients. [More]
Research performed in anemic mice shows acetate stimulates the formation of red blood cells

Research performed in anemic mice shows acetate stimulates the formation of red blood cells

UT Southwestern Medical Center researchers seeking novel treatments for anemia found that giving acetate, the major component of household vinegar, to anemic mice stimulated the formation of new red blood cells. [More]
Researchers explain how molecular structure of the heart muscle changes in heart failure

Researchers explain how molecular structure of the heart muscle changes in heart failure

In a new study published in Proceedings of the National Academy of Sciences USA, researchers at the University of Alberta's Faculty of Medicine & Dentistry have explained how the function of a key protein in the heart changes in heart failure. [More]
Scientists discover mechanism that resists cancer drugs in estrogen-positive breast cancer

Scientists discover mechanism that resists cancer drugs in estrogen-positive breast cancer

Scientists have discovered a previously unknown mechanism by which estrogen prepares cells to divide, grow and, in the case of estrogen-positive breast cancers, resist cancer drugs. The researchers say the work reveals new targets for breast cancer therapy and will help doctors predict which patients need the most aggressive treatment. [More]
Study: Simple blood test could identify people with hypercalcaemia

Study: Simple blood test could identify people with hypercalcaemia

High levels of calcium in blood, a condition known as hypercalcaemia, can be used by GPs as an early indication of certain types of cancer, according to a study by researchers from the universities of Bristol and Exeter. [More]
Study on widespread vitamin D deficiency among patients who undergo thyroidectomy

Study on widespread vitamin D deficiency among patients who undergo thyroidectomy

A new study from researchers at Henry Ford Hospital in Detroit finds widespread vitamin D deficiency among patients who undergo a thyroidectomy, potentially putting them at greater risk for developing dangerously low blood calcium levels after surgery. [More]
Mfn2 protein: A future therapeutic target for neuronal death reduction in ischemic stroke

Mfn2 protein: A future therapeutic target for neuronal death reduction in ischemic stroke

A new study published in the prestigious publication The EMBO Journal shows that the mitochondrial protein Mfn2 may be a future therapeutic target for neuronal death reduction in the late phases of an ischemic stroke. [More]
New study sheds light on longstanding question about role of mitochondria in motor neuron diseases

New study sheds light on longstanding question about role of mitochondria in motor neuron diseases

A new study by researchers at the University of Utah School of Medicine sheds light on a longstanding question about the role of mitochondria in debilitating and fatal motor neuron diseases and resulted in a new mouse model to study such illnesses. [More]