Epidemiology Category

In hot climates the increase in daily urinary excretion of calcium in non-acclimatised subjects was explained by the action of ul­traviolet rays that stimulate the production of vitamin D3 with consequent increased intestinal absorption of calcium. In regions with temperate climates, seasonal variations in calci­um excretion were also recorded during the summer months and corresponded […]

Urinary calcium excretion seems to be influenced by dietary in­takes of calcium, sodium, potassium, protein, and carbohy­drates. However, this relationship was not demonstrated in populations with a low intake of nutrients. Calcium Calcium-load studies conducted by Marshall et al. and Lemann et al. have demonstrated a linear relation between oral assumption and urinary excretion of […]

According to Robertson et al. the distribution of values of urinary calcium excretion seems to be a continuous trait. However, calcium excretion rate values are skewed with a long tail of high values that represents a group of subjects with “ab­normal” calcium excretion that should be classified as “hyper- calciuric”. cialis professional 20 mg online […]

Bulusu et al examined the relationships between age and sex and urinary calcium excretion, expressed in a variety of ways, in a large population of normal subjects (146 men and 190 women, aged 3-89 years). The mean daily urinary calcium and the mean calcium/creati- nine ratio were significantly higher in males than females. The daily […]

In a group of 201 healthy subjects (99 males and 102 females) from a village nearby Milan (unpublished data) the prevalence of hypercalciuria, greater than 300 mg/24 hour in men and 250 mg/24 hour in women, was 12.5% (12% in males and 14% in females). In the same population, considering a 0.15 urinary calcium to […]

Introduction Hypercalciuria is a biochemical syndrome consisting of an ex­aggerated urinary excretion of calcium exceeding the upper “normal” limits. cialis professional cheap canadian drugs Several definite diseases may account for hypercalciuria such as hyperparathyroidism, sarcoidosis, malignant neoplasm, im­mobilization, vitamin D excess, lithium, etc. Hypercalciuria without clinical cause is defined as idiopathic hypercalciuria. It was originally described […]