calcium

11/07/2013 - 12:29

A recent prospective, randomized, placebo-controlled clinical trial reports that calcium and vitamin D supplementation improves bone density in a group of male veterans with epilepsy who were treated chronically with antiepileptic drugs (AEDs). The results published in Epilepsia, a journal of the International League Against Epilepsy (ILAE), suggest that risedronate, a bisphosphonate, may help to prevent new vertebral fractures when taken with calcium and vitamin D supplementation.

 

01/04/2013 - 11:50

Calcium is so much more than the mineral that makes our bones and teeth strong: It is a ubiquitous signaling molecule that provides crucial information inside of and between cells. Calcium is used to help our hearts beat regularly, our guts to function appropriately and even for fertilization to occur. It is also needed to help muscles and blood vessels contract, to secrete hormones and enzymes and to send messages throughout the nervous system.

09/19/2012 - 14:47

As human bones age, they undergo geometric changes and also lose minerals such as calcium that give them density and strength.  As a result, broken bones are one of the most common injuries in older people, and nearly 300,000 Americans are hospitalized each year for hip fractures alone. With fractures often come permanent losses in mobility.

06/15/2012 - 15:17

Vitamin D and calcium are dietary requirements, but it’s unclear how much is best for us. New draft findings by the United States Preventive Services Task Force conclude that for healthy, postmenopausal women, daily supplementation with low levels of vitamin D  — up to 400 international units — combined with 1,000 milligrams of calcium, does not reduce fracture risk.

06/04/2012 - 09:04

Working with researchers in the US and Germany, Johannes Messinger at Umeå University is opening new avenues to understand photosynthesis and create artificial photosynthesis. Using x-ray analysis, they have managed to see the structure of molecules under conditions where photosynthesis can occur, and they have also found that calcium plays a critical role in decomposing water.

02/23/2012 - 13:35

How much calcium could a hibernating woodchuck’s heart cells sequester, if a hibernating woodchuck’s heart cells could sequester calcium? More than enough, it turns out, to protect the animals from cardiac arrhythmias – abnormal heart rhythms such as ventricular tachycardia and ventricular fibrillation that can lead to sudden cardiac death – according to a new study of the hibernating animals that may provide insight into arrhythmia therapies.