Calcium Recommended Daily Allowance (RDA)

Patient

Q: I am taking calcium pills for 1 month. is it safe or could it be dangerous if i take more calcium pills.

Doctor

A:    The recommended daily allowance (RDA) for Calcium depends on the age, then, for a female with age between 19-50 years old is: 1,000 mg/day. On the other hand, the tolerable upper intake levels (ULs) for calcium have been established for females with ages between 14-50 years old in: 2,500mg/day. If you stay between these ranges it is not likely that you have health risks from excessive Calcium intake.  Milk, yogurt, and cheese are rich sources of calcium; nondairy sources include vegetables, such as Chinese cabbage, kale, and broccoli, most grains do not have high amounts of calcium unless they are fortified, foods fortified with calcium include many fruit juices and drinks, tofu, and cereals. Excessively high levels of calcium in the blood known as hypercalcemia impair kidney function, and lead to reduced absorption of other essential minerals, such as iron, zinc, magnesium, and phosphorus. However, hypercalcemia rarely results from dietary or supplemental calcium intake and is most commonly associated with hyperparathyroidism, advanced cases of cancer or excessive intakes of vitamin D from supplements at doses of 50,000 IU/day or higher.

Related Q&A

Q: Advice? Symptoms below........................................................

Q: Hi I brought a plastic plate with food on it to a party and covered the whole thing with foil to keep it warm. The ...

Q: Hi how are u. is it OK to ride my excersixe bike 60 min a day .5 hrs a week. I'm trying to loose weight.

Q: 16 year old son sick 3 months low white blood count, atypical cells, high lymphocytes, low iGa and Igm, swollen nodes...

Q: Hello I have some peeling skin on my penis right beneath the glans. it itches and may have an odor to it. its been th...

 
DOCTOR ADVISORY BOARD
218

Dr. James Obaji M.D.

  • 247 Reviews
  • Family Physician
173

Dr. Suneel Sharman M.D.

  • 190 Reviews
  • Family Physician
138

Dr. Pat Golden M.D.

  • 169 Reviews
  • Cardiologist
98

Dr. Kunaal Jindal M.D.

  • 112 Reviews
  • Plastic Surgeon
CNN
BBC
MSNBC
CBS
abcNews
FoxNews