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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.
Study finds older adults who sustain wrist fractures more likely to have poor balance

Study finds older adults who sustain wrist fractures more likely to have poor balance

Elderly patients suffering a low energy wrist (distal radius) fracture are more likely to have difficulties with balance, placing them at risk for future injuries, according to a new study appearing in the July 20, 2016 issue of the Journal of Bone and Joint Surgery. [More]
Scientists demonstrate synapses between specific neuron types form clusters

Scientists demonstrate synapses between specific neuron types form clusters

The cerebral cortex resembles a vast switchboard. Countless lines carrying information about the environment, for example from the sensory organs, converge in the cerebral cortex. [More]
New SACN guidelines recommend daily 10 micrograms intake of Vitamin D

New SACN guidelines recommend daily 10 micrograms intake of Vitamin D

The Scientific Advisory Committee on Nutrition (SACN) has published a report advising that anybody aged over one year should have a vitamin D intake of 10 micrograms a day throughout the year. [More]
Researchers identify how sensory nerve receptors work together to transmit itch signals

Researchers identify how sensory nerve receptors work together to transmit itch signals

Researchers have found how sensory nerve cells work together to transmit itch signals from the skin to the spinal cord, where neurons then carry those signals to the brain. Their discovery may help scientists find more effective ways to make itching stop. [More]
Study pinpoints how immune abnormalities in retina may lead to macular degeneration

Study pinpoints how immune abnormalities in retina may lead to macular degeneration

In a study published this week in the Proceedings of the National Academy of Sciences, a University of Wisconsin-Madison research team pinpoints how immune abnormalities beneath the retina result in macular degeneration, a common condition that often causes blindness. [More]
Scientists capture new images of calcium-shuttling molecule linked to aggressive cancers

Scientists capture new images of calcium-shuttling molecule linked to aggressive cancers

Scientists have captured new images of a calcium-shuttling molecule that has been linked to aggressive cancers. The three-dimensional structure could help researchers develop novel therapies and diagnostic tools for diseases that are caused by a malfunction in calcium adsorption. [More]
Japanese researchers suggest link between stimulus response and consciousness

Japanese researchers suggest link between stimulus response and consciousness

Japanese researchers centered at Nagoya University reveal a role for orexin neurons of the hypothalamus when mice respond to painful stimuli, and suggest a link between stimulus response and consciousness. [More]
New nontoxic hydrogel bonds strongly to defected bones

New nontoxic hydrogel bonds strongly to defected bones

Researchers at Hokkaido University have developed a new kind of hydrogel that bonds spontaneously and strongly to defected bones, suggesting potential use in the treatments of joint injuries. [More]
Clinical study examines new treatment option for aortic stenosis patients with larger valve structure

Clinical study examines new treatment option for aortic stenosis patients with larger valve structure

A clinical trial exploring a new minimally invasive treatment option for some patients with severe aortic stenosis recently launched at Baylor Jack and Jane Hamilton Heart and Vascular Hospital. [More]
VIB research reveals new insights into ALS

VIB research reveals new insights into ALS

Research into amyotrophic lateral sclerosis (ALS) conducted by VIB-KU Leuven has led to interesting and unexpected conclusions. [More]
Diabetic patients experience long-term survival outcomes with TAR/CABG surgery

Diabetic patients experience long-term survival outcomes with TAR/CABG surgery

Diabetic patients who undergo heart bypass surgery are living longer and have much better long-term outcomes when cardiothoracic surgeons use arteries rather than veins for the bypasses, according to a new study published online today by The Annals of Thoracic Surgery. [More]
UTHealth researchers examine effectiveness of Sapien 3 TAVR in low-risk patients with aortic stenosis

UTHealth researchers examine effectiveness of Sapien 3 TAVR in low-risk patients with aortic stenosis

The Structural Heart Program team at McGovern Medical School at The University of Texas Health Science Center at Houston is among the first in the country to investigate the safety and effectiveness of Edwards Lifesciences Sapien 3 transcatheter aortic heart valve in low surgical risk patients who suffer from severe aortic valve disease. [More]
BetterYou’s transdermal MagnesiumOil Spray trio certified on Informed-Sport programme

BetterYou’s transdermal MagnesiumOil Spray trio certified on Informed-Sport programme

A transdermal trio of MagnesiumOil Sprays by health pioneers BetterYou has been certified for inclusion in the kit bags of the world’s elite sporting stars and coaches. [More]
Watching TV for long hours during childhood linked to lower bone mineral content

Watching TV for long hours during childhood linked to lower bone mineral content

Consistently watching high levels of television during childhood and adolescence were linked with lower peak bone mass at age 20 years in a recent study. [More]
New technique can help identify aggressive forms of DCIS

New technique can help identify aggressive forms of DCIS

When a woman is diagnosed with the earliest stage of breast cancer, how aggressive should her treatment be? Will the non-invasive cancer become invasive? Or is it a slow-growing variety that will likely never be harmful? [More]
High levels of zinc may lead to kidney stone formation

High levels of zinc may lead to kidney stone formation

David Killilea, PhD, a staff scientist at Children's Hospital Oakland Research Institute- the research arm of UCSF Benioff Children's Hospital Oakland - co-authored a study into the causes of kidney stones. [More]
NCX1 protein could help prevent progression of heart failure

NCX1 protein could help prevent progression of heart failure

A protein known to be crucial for maintaining the balance of calcium in cells could prove useful in halting the progression of heart failure. [More]
Bone Balance Index may help predict bone loss in women during menopause transition

Bone Balance Index may help predict bone loss in women during menopause transition

Researchers have developed an index to better predict which women may experience faster bone loss across the menopause transition, according to a new study published in the Endocrine Society's Journal of Clinical Endocrinology & Metabolism. [More]
Researchers identify new myosin kinase that could optimize heart contractions

Researchers identify new myosin kinase that could optimize heart contractions

The heart is the only muscle that contracts and relaxes continuously over a lifetime to pump oxygen-rich blood to the body's organs. Researchers at UT Southwestern Medical Center now have identified a previously unrecognized enzyme that could optimize contraction and lead to new strategies to treat heart failure. [More]

Researchers develop new technique for coating polymer implants with bioactive film

Researchers have developed a technique for coating polymer implants with a bioactive film that significantly increases bonding between the implant and surrounding bone in an animal model. [More]
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