Calcium bioavailability and absorption: a review

The use of sacs of everted small intestine for the study of the transference of substances from the mucosal to the serosal surface

1954 • 1,204 citations

The Parathyroid Glands and Metabolic Bone Disease

1949 • 921 citations

COMPETITIVE PROTEIN-BINDING RADIOASSAY FOR 25-HYDROXYCHOLECALCIFEROL¹

1971 • 908 citations

Bone status and fracture rates in two regions of Yugoslavia

1979 • 814 citations

Calcium-binding proteins and calcium function

1977 • 742 citations

Menopausal changes in calcium balance performance

2009 • 518 citations

Evidence for a Phosphorus-Depletion Syndrome in Man

1968 • 501 citations

Voluntary Medical Care Insurance in the United States

1949 • 465 citations

The Parathyriod Glands and Metabolic Bone Disease.

1948 • 452 citations

EFFECT OF AGE ON CALCIUM ABSORPTION

1970 • 450 citations

Effect of Estrogen on Calcium Absorption and Serum Vitamin D Metabolites in Postmenopausal Osteoporosis*

1980 • 433 citations

Ionic constituents and osmolality of gastric and small-intestinal fluids after eating

1966 • 412 citations

Watching Fat Digestion

1979 • 379 citations

Calcium Metabolism in Normal Human Pregnancy

1971 • 364 citations

Seasonal Changes in Human Plasma Levels of 25-Hydroxyvitamin D

1974 • 343 citations

FREQUENCY OF OSTEOMALACIA AND OSTEOPOROSIS IN FRACTURES OF THE PROXIMAL FEMUR

1974 • 325 citations

Mineral metabolism of healthy adults on white and brown bread dietaries

1942 • 306 citations

Effect of Dietary Calcium and Age on Jejunal Calcium Absorption in Humans Studied by Intestinal Perfusion

1973 • 300 citations

The digestion of pectin in the human gut and its effect on calcium absorption and large bowel function

1979 • 285 citations

Triglyceride Configuration and Fat Absorption by the Human Infant

1969 • 283 citations

EFFECTS OF PURIFIED PHYTATE AND PHYTATE-RICH BREAD UPON METABOLISM OF ZINC, CALCIUM, PHOSPHORUS, AND NITROGEN IN MAN

1973 • 262 citations

Calcium balance and calcium requirements in middle-aged women

1977 • 262 citations

Natural and Synthetic Sources of Circulating 25-Hydroxyvitamin D in Man

1973 • 248 citations

The relationship between calcium intake and edema-, proteinuria-, and hypertension-gestosis: an hypothesis

1980 • 248 citations

Vitamin D. Biochemical, Chemical, and Clinical Aspects Related to Calcium Metabolism.

1977 • 248 citations

Protein-induced hypercalciuria: a longer term study

1979 • 219 citations

Changes in Bone Mass with Age and Alcoholism

1965 • 216 citations

Active transport of calcium by the small intestine of the rat

1960 • 210 citations

The effect of protein intake on the absorption of calcium and magnesium

1942 • 200 citations

Evidence for Extra-Renal 1 α-Hydroxylation of 25-Hydroxyvitamin D ₃ in Pregnancy

1979 • 200 citations

Dietary Phosphate Deprivation in Women and Men: Effects on Mineral and Acid Balances, Parathyroid Hormone and the Metabolism of 25-OH-Vitamin D*

1976 • 191 citations

Effect of Level of Protein Intake on Urinary and Fecal Calcium and Calcium Retention of Young Adult Males

1970 • 191 citations

1,25 Dihydroxy-Vitamin D_3 in Normal Man and Patients with Renal Failure

1974 • 182 citations

Effect of fiber from fruits and vegetables on metabolic responses of human subjects II. Calcium, magnesium, iron, and silicon balances

1979 • 177 citations

Nutritional Hypophosphatemic Rickets in a Premature Infant Fed Breast Milk

1979 • 174 citations

Metabolism of Vitamin D. I. Preparation of Radioactive Vitamin D and Its Intestinal Absorption in the Rat*

1964 • 170 citations

Experimental Diabetes Reduces Circulating 1,25-Dihydroxyvitamin D in the Rat

1977 • 169 citations

Studies in calcium metabolism. I. The calciuretic effect of dietary protein

1974 • 169 citations

CALCIUM BINDING BY DIETARY FIBRE

1978 • 165 citations

A double isotope method for measurement of intestinal absorption of calcium in man.

1965 • 165 citations

The effect of 1alpha-hydroxyvitamin D3 administration on calcium transport in chick intestine brush border membrane vesicles.

1979 • 164 citations

The relationship between vitamin D-stimulated calcium transport and intestinal calcium-binding protein in the chicken

1978 • 163 citations

Effect of Phosphorus on the Absorption of Calcium and on the Calcium Balance in Man1

1978 • 162 citations

Comparison Between Micro-Modifications of Prothrombin-Proconvertin Determinations and of the Prothrombin Time Method

1958 • 162 citations

Effect of prolactin on vitamin D metabolism

1976 • 157 citations

Evidence for Defective Skeletal Mineralization in Low-Birthweight Infants: The Absorption of Calcium and Fat

1976 • 154 citations

A Study of the Minimum Calcium Requirements of Adult Men

1952 • 154 citations

Calcium metabolism in pregnancy: A review

1975 • 153 citations

Study of calcium absorption in man: a kinetic analysis and physiologic model

1969 • 149 citations

Excretion of Fat by Normal Full-Term Infants Fed Various Milks and Formulas

1970 • 144 citations

SECRETION AND EXCRETION OF CALCIUM BY THE HUMAN GASTROINTESTINAL TRACT.

1964 • 142 citations

Lactase Deficiency: Prevalence in Osteoporosis

1978 • 142 citations

Absorption of Ca45 and Sr85 from Solid and Liquid Food at Various Levels of the Alimentary Tract of the Rat

1962 • 138 citations

The effect of meat protein and dietary fiber on colonic function and metabolism I. Changes in bowel habit, bile acid excretion, and calcium absorption

1979 • 135 citations

Clinical Implications of Physicochemical Studies on Bile Salts

1965 • 135 citations

Enhancement of Ca++ Uptake by Lactose in the Rat Small Intestine

1976 • 131 citations

Vitamin D stimulated, calcium-dependent adenosine triphosphatase from brush borders of rat small intestine

1969 • 130 citations

Mineral metabolism on dephytinized bread

1942 • 127 citations

On the abnormal calcium absorption in sarcoidosis

1964 • 124 citations

QUANTITATION OF CALCIUM METABOLISM. THEORY*

1963 • 123 citations

LOSS OF SKELETAL CALCIUM IN LACTATING WOMEN

1970 • 122 citations

BONE DISEASE AND CALCIUM ABSORPTION IN PRIMARY BILIARY CIRRHOSIS With Special Reference to Vitamin-D Therapy

1968 • 119 citations

The oxalic acid content of English diets

1962 • 119 citations

Vitamin D: Biochemical, Chemical and Clinical Aspects related to Calcium Metabolism

1979 • 117 citations

Purification and characterization of chick intestine brush border membrane Effects of 1α(OH) vitamin D3 treatment

1978 • 112 citations

Calcium Accumulation by the Human Fetus

1976 • 111 citations

The Enhancing Action of Certain Carbohydrates on the Intestinal Absorption of Calcium in the Rat

1960 • 109 citations

BILE ACIDS AND PANCREATIC ENZYMES DURING ABSORPTION IN THE NEWBORN

1972 • 108 citations

ABSORPTION AND EXCRETION OF FAT, NITROGEN, AND MINERALS FROM "FILLED" MILKS BY BABIES ONE WEEK OLD

1965 • 108 citations

Abnormal vitamin D metabolism in patients with cirrhosis

1976 • 108 citations

Bone disease in primary biliary cirrhosis: Reversal of osteomalacia with oral 25-hydroxyvitamin D

1980 • 106 citations

Perinatal parathyroid hormone, vitamin D metabolites, and calcitonin in man

1980 • 103 citations

Significance of Ca-soap formation for calcium absorption in the rat.

1977 • 101 citations

A New Oral Isotopic Test of Calcium Absorption *

1965 • 98 citations

Calcium Absorption from Milk and Lactose-Free Milk in Healthy Subjects and Patients with Lactose Intolerance

1973 • 98 citations

Effect of Dietary Fiber on Mineral Absorption in Growing Rats

1980 • 97 citations

The Influence of Numerous Pregnancies and Lactations on Bone Dimensions in South African Bantu and Caucasian Mothers

1972 • 96 citations

Medium-Chain Triglyceride Feeding in Premature Infants: Effects on Calcium and Magnesium Absorption

1978 • 96 citations

Calcium Requirement and Adaptation in Adult Men

1959 • 95 citations

Studies on the Enhancement of Radiocalcium and Radiostrontium Absorption by Lactose in the Rat

1959 • 95 citations

The human requirement of calcium: should low intakes be supplemented?

1972 • 91 citations

Influence of refined cellulose on human bowel function and calcium and magnesium balance

1980 • 90 citations

Effect of age on intestinal calcium absorption and adaptation to dietary calcium.

1979 • 88 citations

Effects of dietary lactose and lactase preparation on the intestinal absorption of calcium and magnesium in normal infants

1975 • 88 citations

Hyperoxaluria and intestinal disease

1977 • 88 citations

CALCIUM AND PHOSPHORUS METABOLISM IN RELATION TO LACTOSE TOLERANCE

1970 • 88 citations

Reduction of Renal Calcium Reabsorption in Man by Consumption of Dietary Protein

1979 • 85 citations

Regulation of intestinal calcium-binding protein calcium intake in the rat

1975 • 85 citations

Biochemical Response of Late Rickets and Osteomalacia to a Chupatty-free Diet

1972 • 84 citations

Effect of Ca intake on saturable and nonsaturable components of duodenal Ca transport

1981 • 83 citations

Calcium and Fat Absorption in Neonatal Period

1970 • 82 citations

Effect of Dietary Phosphorus on Calcium Metabolism in Intact and Parathyroidectomized Adult Rats

1972 • 79 citations

Growth and Mineral Metabolism in Very Low Birth Weight Infants. II. Effects of Calcium Supplementation on Growth and Divalent Cations

1975 • 79 citations

VITAMIN-D ABSORPTION AFTER PARTIAL GASTRECTOMY

1966 • 79 citations

The Importance of the Colon in Calcium Absorption Following Small-Intestinal Resection

1980 • 75 citations

PLASMA 1,25-DIHYDROXYVITAMIN D LEVELS IN PREGNANCY AND LACTATION

1979 • 72 citations

ABSORPTION AND EXCRETION OF CALCIUM AND FAT BY YOUNG INFANTS

1969 • 70 citations

Dietary perturbation of calcium metabolism in normal man: compartmental analysis

1969 • 70 citations

Utilization and Intestinal Excretion of Calcium in Man

1954 • 69 citations

Fat absorption in infants of birth weight less than 1,300 gm

1974 • 69 citations

CALCIUM-FATTY ACID ABSORPTION IN TERM INFANTS FED HUMAN MILK AND PREPARED FORMULAS SIMULATING HUMAN MILK

1970 • 69 citations

Calcium Requirement and Calcium Therapy

1979 • 67 citations

Calcium, phosphorus and magnesium requirement

1976 • 64 citations

Effect of ethanol ingestion on duodenal calcium transport.

1975 • 63 citations

Recent Advances in the Metabolism of Vitamin D

1981 • 62 citations

The Influence of Ingestion of Calcium and Other Soap-Forming Substances on Fecal Fat

1961 • 62 citations

Nutritional Balance Studies in Very-Low-Birth-Weight Infants: Enhanced Nutrient Retention Rates by an Experimental Formula

1980 • 62 citations

Pediatric Diseases Related to Calcium

1980 • 61 citations

Absorption of calcium measured by intubation and perfusion of the intact human small intestine

1969 • 60 citations

Dietary fiber: analysis and food sources

1978 • 60 citations

Calcium deficiency in rural black children in South Africa—a comparison between rural and urban communities

1979 • 59 citations

Some New Concepts Emanating from a Study of the Metabolism and Function of Vitamin D

2009 • 59 citations

Bile salts and calcium absorption

1966 • 56 citations

Tracer Studies of Intestinal Calcium Absorption in Man

1969 • 56 citations

Mineral Metabolism on Rice Diets

1950 • 55 citations

Effect of dietary calcium and phosphorus on intestinal calcium absorption and vitamin D metabolism

1978 • 54 citations

Maturation of Calcium Transport in the Rat Small and Large Intestine

1980 • 53 citations

Intestinal absorption of calcium-47 and strontium-85 in lactating rats

1969 • 52 citations

The Calcium Balance of Adult Human Subjects on High- and Low-Fat (Butter) Diets

1951 • 52 citations

The effect of fat on calcium absorption from a mixed meal in normal subjects, patients with malabsorptive disease, and patients with a partial gastrectomy

1971 • 51 citations

Textbook of gastroenterology and nutrition in infancy

1982 • 50 citations

Rickets of Prematurity

1981 • 49 citations

Bile Acid Metabolism and Fat Absorption in Newborn Infants

1974 • 48 citations

Calcium absorption in the elderly

1975 • 48 citations

Calcium Absorption and Bone Mineral Contents Following Intestinal Shunt Operation in Obesity

1974 • 47 citations

Calcium Absorption in Crohn's Disease

1976 • 46 citations

Absorption and endogenous faecal excretion of calcium by low birthweight infants on feeds with varying contents of calcium and phosphate.

1977 • 46 citations

Influence of dietary calcium intake on Ca47 absorption in man

1969 • 45 citations

CALCIUM BALANCE IN PREGNANCY

1974 • 45 citations

Adaptation to dietary calcium and phosphorus restriction changes with age in the rat

1980 • 44 citations

The effect of elevated prolactin levels on plasma 1,25-dihydroxyvitamin D and intestinal absorption of calcium.

1980 • 43 citations

Jejunal Absorption and Secretion of Calcium in Patients with Chronic Renal Disease on Hemodialysis

1974 • 42 citations

Bedouin osteomalacia due to calcium deprivation caused by high phytic acid content of unleavened bread

1973 • 42 citations

Further Observations on Lactose Stimulation of the Gastrointestinal Absorption of Calcium and Strontium in the Rat

1960 • 42 citations

Effects of High Dietary Calcium and Phosphorus on Calcium, Phosphorus, Nitrogen and Fat Metabolism in Children

1964 • 40 citations

A comparison of the effects of feeding sulfur amino acids and protein on urine calcium in man

1980 • 40 citations

In vivo calcium transport by rat small intestine after massive small bowel resection

1974 • 39 citations

A Long-Time Study of Nitrogen, Calcium and Phosphorus Metabolism on a Low-Protein Diet

1939 • 38 citations

INTESTINAL ABSORPTION OF CALCIUM

1973 • 37 citations

Seasonal and annual changes in the calcium metabolism of man

1943 • 35 citations

The influence of a daily serving of spinach or its equivalent in oxalic acid upon the mineral utilization of children

1938 • 35 citations

Endogenous Calcium in the Feces of Adult Man and the Amount of Calcium Absorbed from Food

1955 • 33 citations

THE RELATIONSHIP BETWEEN OESTROGEN STATUS AND BONE LOSS IN POST‐MENOPAUSAL WOMEN

1976 • 32 citations

Duodenal and ileal adaptation to dietary calcium restriction: in vivo studies in the rat

1976 • 32 citations

The role of insulin and parathyroid hormone in the protein-induced calciuria of man

1981 • 31 citations

The site of 1α,25-dihydroxyvitamin D3 production in pregnancy

1979 • 31 citations

Effects of Previous Calcium Intakes on Adaptation to Low and High Calcium Diets in Rats

1969 • 29 citations

Calcium absorption in the normal, bile-duct ligated, and cirrhotic rat, with observations on the effect of long- and medium-chain triglycerides.

1968 • 29 citations

Advances in Nutritional Research

1979 • 28 citations

Effect of 1,25-dihydroxycholecalciferol on ethanol mediated suppresion of calcium absorption

1975 • 26 citations

A Long-Time Study of Nitrogen, Calcium and Phosphorus Metabolism on a Medium-Protein Diet

1939 • 25 citations

THE PREVENTION OF THE TETANY OF PARATHYROIDECTOMIZED DOGS

1929 • 25 citations

Stable Isotope Methods for Bioavailability Assessment of Dietary Minerals in Humans

1980 • 25 citations

Wine versus ethanol in human nutrition III. Calcium, phosphorus, and magnesium balance

1979 • 24 citations

Isotopic Method for Measurement of Calcium Absorption from the Gastro-intestinal Tract

1965 • 23 citations

Calcium accumulation by chick intestinal mitochondria

1980 • 23 citations

Calcium ATPase and intestinal calcium transport in uremic rats

1980 • 22 citations

EFFECTS OF 1,25‐DIHYDROXYCHOLECALCIFEROL ON ⁴⁷CALCIUM ABSORPTION IN POST‐MENOPAUSAL OSTEOPOROSIS

1979 • 22 citations

Calcium Retained by Young Women Before and After Adding Spinach to the Diet

1952 • 22 citations

Role of Nutrition in the Development of Osteomalacia in the Elderly

1979 • 21 citations

THE REPRODUCIBILITY OF THE BALANCE METHOD IN MAN AS APPLIED TO CALCIUM AND PHOSPHORUS.

1965 • 20 citations

Effects of Calcium Solubility on Absorption by Rats with Induced Achlorhydria

1975 • 18 citations

The Utilization of Calcium in Soybean Products and Other Calcium Sources

1946 • 18 citations

The Relative Merits of Various Techniques for Measuring Radiocalcium Absorption

1980 • 17 citations

Use of stable48Ca in the clinical measurement of intestinal calcium absorption

1978 • 17 citations

Fractional Intestinal Absorption and Retention of Calcium Measured by Whole-Body Counting. Application of a Power Function Model

1975 • 17 citations

Radioimmunoassay Studies of Intestinal Calcium-binding Protein in the Pig. I. Identification of Intestinal Calcium-binding Protein in Blood and Response to a Low Calcium Diet

1975 • 17 citations

Studies in the dumping syndrome

1970 • 16 citations

Effect of Ascorbic Acid and of Orange Juice on Calcium and Phosphorus Metabolism of Women

1957 • 16 citations

Fractional Intestinal Absorption and Retention of Calcium Measured by Whole-Body Counting. Application of a Power Function Model

1975 • 14 citations

Differences in duodenal calcium-binding protein (CaBP) in response to a low-calcium or a low-phosphorus intake

1976 • 14 citations

Bile and Endogenous Fecal Calcium in Man

1965 • 13 citations

Intestinal calcium binding protein in uremia

1979 • 10 citations

Calcium‐47 Absorption in Urolithiasis

1974 • 10 citations

Calcium Absorption in the Elderly

1976 • 9 citations

Surgical Management of Obesity

2024 • 8 citations

A comparative study of two methods of measurement of fractional calcium absorption: results in normal individuals and patients with various disturbances of calcium metabolism

1978 • 6 citations

Diurnal variations of active calcium transport in the intestine of pregnant and lactating rat.

1980 • 5 citations

Elevated serum 1,25(OH)2 vitamin D (1,25(OH)2D) concentrations in rickets of prematurity.

1980 • 4 citations

The Measurement of Calcium Absorption and Absorption Rate with an External Arm Radioactivity Counter

1978 • 2 citations