Delek Group Ltd. is engaged in gas exploration and production in Israel and abroad through investee companies and partnerships, as well as in the field of marketing of fuel products in Israel, and has holdings in a number of other activities, the main of which is the insurance and finance activity in Israel.
Long-Term Calcium and Vitamin D Supplement Use May Be Linked to Increased Risk of Kidney Stones. June 26, 2012 â Calcium and vitamin D supplements are associated with high calcium levels in the blood and urine, which could increase the risk of kidney stones, a new study ...
Other types of stones, and their underlying causes, include: 1  Struvite stones: Found more often in women, these are almost always the result of urinary tract infections. 2  Uric acid stones: These are a byproduct of protein metabolism. 3  Cystine stones: Represent a very small percentage of kidney stones.