Written by Inara Hasanali, M.A.  | 
Medically Reviewed by Dr. Sunil Shroff, MBBS, MS, FRCS (UK), D. Urol (Lond) on Feb 14, 2020

Calcium and High Blood Pressure

According to studies conducted by researchers at the University of CT, low calcium intake has been linked to higher blood pressure and the development of hypertension whereas high dietary calcium intake or calcium supplementation lowered the BP.

Many scientists have found significant and independent associations between high dairy products and dietary calcium intakes and lower blood pressure among middle-aged men. Dietary calcium is an important factor for blood pressure via its effect on calcium metabolism.

Calcium is the most abundant mineral present in the human body.

Calcium has many functions. It is needed

  • to support the body structure
  • for muscle contraction
  • blood vessel contraction
  • blood vessel expansion
  • hormonal secretions
  • secretions of enzymes
  • sending messages through the Central Nervous System

Sources of Calcium

All dairy products including milk, cheese and yogurt contain high amounts of easily absorbable calcium. Leafy vegetables, nuts and oilseeds, and sardines are also rich sources of calcium. Although most grains are not high in calcium they do contribute significant calcium to the diet due to their frequent consumption. Many foods including fruit juices are also fortified with calcium.

Action of Calcium

High levels of intracellular calcium increase vascular smooth muscle tone, peripheral vascular resistance, and responsiveness to the sympathetic and RAS systems, actions that elevate blood pressure. Paradoxically it is low not high calcium intake that stimulates an increase in parathyroid hormone. This leads to calcium mobilization from the bone, increased intestinal calcium absorption, decreased renal calcium excretion, increased intracellular calcium concentration and subsequently high blood pressure.

Some studies including those on the DASH eating plan have reinforced the importance of a diet high in calcium together with other minerals as having a beneficial effect on blood pressure. Hence a diet rich in fruits and vegetables with optimum amounts of whole grains, dairy products and nuts and oilseeds with its high content of dietary minerals has a beneficial effect on blood pressure.


  1. Hajjar IM, Grim CE, George V, Kotchen TA. Impact of diet on blood pressure and age-related changes in blood pressure in the US population: analysis of NHANES III. Arch Intern Med. 2001;161(4):589-593
  2. Ruidavets J-B, Bongard V, Simon C, Dallongeville J, Ducimetiere P, Arveiler D, Amouyel P, Bingham A, Ferrierres : Independent contribution of dairy products and calcium intake to blood pressure variations at a population level. J Hypertens 2006
  3. About cardiovascular diseases - (https://www.who.int/cardiovascular_diseases/about_cvd/en/)
  4. Risk of high blood pressure in salt workers working near salt milling plants: A cross-sectional and interventional study - (http://www.ehjournal.net/content/4/1/13)
  5. DASH Diet and High Blood Pressure - (http://www.webmd.com/hypertension-high-blood-pressure/guide/dash-diet)
  6. Potassium lowers blood pressure - (http://www.health.harvard.edu/fhg/updates/update0705c.shtml)
  7. Dietary calcium intake and Renin Angiotensin System polymorphisms alter the blood pressure response to aerobic exercise: a randomized control design - (http://www.nutritionandmetabolism.com/content/4/1/1)
  8. Calcium - (http://ods.od.nih.gov/factsheets/calcium.asp)


Ramesh31 Thursday, August 31, 2017

Please make your content more India specific, being a common man its impossible to find most of the items mentioned in this article. And also try to mention only those food items that are easily affordable and used in everyday life.

Ramesh31 Thursday, August 31, 2017

I had been looking for an India specific diet plan but most of the items listed aren't even available easily and regularly. Please mention Indian food items.

viveklala Thursday, June 13, 2013

i have 140/90 BP. what should i do and not to do.

ganeshdubai Friday, December 7, 2012

let me know min bp 73 and high bp 117 for 43 age male..is comes under which level BP

amna.t Tuesday, October 16, 2012

so it means Ca tablets decreases blood pressure.

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