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.

Losing weight improves heart muscle contraction in people with obesity and heart failure

In a new research report, a team of scientists led by Johns Hopkins Medicine say people with severe obesity and a common type of heart failure experience weakened heart muscles, and that losing weight may reverse some of these effects.

25 Apr 2026

Email alerts boost valve replacement rates in older patients with aortic stenosis

New data finds older patients with severe aortic stenosis (AS) were more likely to receive aortic valve replacement (AVR) and survive when clinicians received automated email notifications with abnormal heart ultrasound results detecting AS.

25 Apr 2026

M-TEER procedure effectively treats mitral regurgitation in patients with calcification

Results from a new analysis show that patients with mitral annular calcification (MAC) who undergo minimally invasive mitral transcatheter edge-to-edge repair (M-TEER) experience similar reductions in mitral regurgitation (MR) and improvement in quality of life compared to those seen in patients without calcification.

24 Apr 2026

Innovative light probes allow real-time visualization of cellular processes

Fluorescent proteins have revolutionized science, enabling researchers to tag and visualize individual molecules in living cells, tissues, and animals.

23 Apr 2026

Experimental drug kills aggressive breast cancer by toxic fat buildup

An experimental drug targeting triple-negative breast cancer overwhelms cancer cells with toxic fats, according to new tests on human-derived tumors in mice.

22 Apr 2026

Calcium signals in microglia drive anxiety and compulsive behaviors

Researchers had previously discovered a population of immune cells within the brain that can act as accelerators and brakes for anxiety in mice. N

21 Apr 2026

Key gene variants tied to developmental dysplasia of the hip and osteoarthritis

Developmental dysplasia of the hip (DDH) is a polygenetic disorder that increases the risk of hip osteoarthritis.

17 Apr 2026

Brain organoids reveal mutation-specific insights for Rett syndrome

Though many studies approach the developmental disorder Rett syndrome as a single condition arising from general loss of function in the gene MECP2, a new study by neuroscientists in The Picower Institute for Learning and Memory at MIT shows that two different mutations of the gene caused many distinct abnormalities in lab cultures.

15 Apr 2026

New research identifies neural sequence for odor navigation in worms

Animal behavior reflects a complex interplay between an animal's brain and its sensory surroundings. Only rarely have scientists been able to discern how actions emerge from this interaction.

10 Apr 2026

Study finds nutritional risks in users of GLP-1 drugs

Adults with overweight or obesity taking the new generation of weight loss drugs semaglutide and tirzepatide tend to eat significantly less, leaving them vulnerable to nutritional deficiencies, according to one of the first real-world studies to examine dietary behavior in people using glucagon-like peptide-1 receptor agonists and dual GLP-1/glucose-dependent insulinotropic polypeptide (GIP) dual agonists RAs (collectively referred to as GLP-1 RAs) with the help of an AI-powered nutritional tracking app.

9 Apr 2026

Prickly pear may pack a surprising punch against metabolic syndrome

This narrative review examines how Opuntia ficus-indica fruit, or prickly pear, may help target multiple features of metabolic syndrome through its fiber, betalains, polyphenols, carotenoids, and other bioactive compounds. The authors conclude that the fruit shows promising mechanistic and preclinical potential, but stronger human trials are still needed before firm clinical claims can be made.

6 Apr 2026

Evolocumab trial could reshape how doctors treat high-risk cholesterol patients

A new ACC/AHA dyslipidemia guideline and editorial argue that guideline development is rigorous but can lag behind fast-moving science, using the VESALIUS-CV trial as a clear example. The trial showed that intensive LDL cholesterol lowering with evolocumab reduced cardiovascular events in high-risk patients without prior heart attack or stroke, with implications for future guideline updates.

6 Apr 2026

Calcium channel mutations disrupt early brain development and cause epilepsy

Researchers at Baylor College of Medicine have uncovered a previously unrecognized mechanism by which inherited calcium channel mutations disrupt early brain development and predispose children to epilepsy and related cognitive challenges.

3 Apr 2026

Pediatric experts say plain yogurt is safe from 6 months and belongs in a baby’s diet

An expert panel review says plain, whole yogurt with no added sugar or sweeteners can be introduced from 6 months as part of complementary feeding, provided it does not replace breast milk or infant formula as the main source of nutrition. It also explains that yogurt provides live microorganisms and key nutrients, is generally well tolerated, and helps address common myths about inflammation, mucus, acne, sugar, and safety.

2 Apr 2026

Study reveals pearling mechanism behind mitochondrial DNA spacing

Mitochondria are often described as the cell's power plants, because they generate energy. To help them achieve this, mitochondria carry their own small genome called mitochondrial DNA (mtDNA).

2 Apr 2026

Oral molecule prevents kidney stones and restores survival in mice

Scientists at the Buck Institute for Research on Aging have shown that an orally administered small molecule, N-propargylglycine (N-PPG), can completely prevent the formation of calcium oxalate kidney stones, protect against kidney failure, and fully restore normal survival in a mouse model of Primary Hyperoxaluria Type 2 (PH2), a rare and currently untreatable genetic disorder that causes progressive kidney failure in infants and young adults.

2 Apr 2026

Researchers settle 60-year debate on the fundamental mechanisms of visual perception

A scientific dispute spanning six decades about fundamental mechanisms of visual perception in mammals has now been settled. Researchers at TUM have succeeded in observing the visual information flow from neuron to neuron.

2 Apr 2026

How vitamin D in the first 1,000 days may shape lifelong health

This narrative review argues that vitamin D is clearly important for skeletal health during the first 1,000 days of life and may also shape immune, metabolic, and selected neurodevelopmental pathways during early development. However, the authors stress that human evidence for most non-skeletal outcomes remains heterogeneous, with benefits appearing most consistent in populations with baseline deficiency.

31 Mar 2026

Planetary health diet meets key nutrient needs during early pregnancy

Following The Planetary Health Diet in pregnancy can meet key nutrient requirements, suggesting that women who eat more sustainably in pregnancy may have higher intakes of several key-pregnancy-related nutrients, including folate, iron, calcium, and dietary fiber.

31 Mar 2026

Gut-derived metabolites regulate immune cells in complex ways

Published on March 23, 2026, in Volume 2, article number 18 of the journal Immunity & Inflammation, the review begins by systematically outlining the sources and synthetic pathways of immune-relevant microbial metabolites, including bile acids, short-chain fatty acids, amino acid derivatives, vitamins, trimethylamine/trimethylamine N-oxide, and odd-chain fatty acids.

31 Mar 2026