Calcium News and Research

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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.
Tiny Protein Interacts with Ion Channels to Make Our Eyes Sensitive to Dim Light

Tiny Protein Interacts with Ion Channels to Make Our Eyes Sensitive to Dim Light

Astrocytes in the Brain may Play a Key Role in Regulating Information

Astrocytes in the Brain may Play a Key Role in Regulating Information

Determining the structure of protein pumps using cryo-EM

Determining the structure of protein pumps using cryo-EM

Study identifies 238 amyloid toxicity protective or activator genes

Study identifies 238 amyloid toxicity protective or activator genes

Deactivating mosquito sperm to control populations of Culex

Deactivating mosquito sperm to control populations of Culex

High doses of sucralose limit T cell proliferation and differentiation

High doses of sucralose limit T cell proliferation and differentiation

Significance of astrocyte–neuron interactions in fine-tuning brain function

Significance of astrocyte–neuron interactions in fine-tuning brain function

Analyzing microscopic chalk disks coccoliths formed by the marine algae

Analyzing microscopic chalk disks coccoliths formed by the marine algae

Revealing a novel form of ferroptosis that may be implicated in diseases caused by acute injury

Revealing a novel form of ferroptosis that may be implicated in diseases caused by acute injury

Inhibiting astrocyte hyperactivity can reverse cognitive deficits associated with social deprivation

Inhibiting astrocyte hyperactivity can reverse cognitive deficits associated with social deprivation

Synthetic biosensor could lead to better understanding of cell biology

Synthetic biosensor could lead to better understanding of cell biology

Extra nitrogen from fuel pollution causes dry soil to let go of carbon

Extra nitrogen from fuel pollution causes dry soil to let go of carbon

Figuring out how cells safeguard their genomes during replication

Figuring out how cells safeguard their genomes during replication

Molecular mechanism behind microtubule dynamics in R. contractilis

Molecular mechanism behind microtubule dynamics in R. contractilis

'Green' products recycled from human excreta can be excellent fertilizers for agriculture

'Green' products recycled from human excreta can be excellent fertilizers for agriculture

Investigating the molecular mechanisms that govern cilia force sensing

Investigating the molecular mechanisms that govern cilia force sensing

MIT researchers use specialized MRI sensor to detect light deep within tissues

MIT researchers use specialized MRI sensor to detect light deep within tissues

Small fish could help close nutritional gaps for undernourished people

Small fish could help close nutritional gaps for undernourished people

Andor Launches New ZL41 Cell and Sona sCMOS Cameras

Andor Launches New ZL41 Cell and Sona sCMOS Cameras

Newly sequenced Honeycrisp apple genome could be a boon for scientists and breeders

Newly sequenced Honeycrisp apple genome could be a boon for scientists and breeders

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