Thanks for visiting! My goal here is to discuss the latest scientific research to separate the good from all that "guff" in nutritional sciences and all aspects of human health. Because the more you Know, well...the more you Know!

Looking for a specific post? You can browse the Most Read Posts, the Blog Archives, or use the Search function in top left of this page. Thanks for your support and stay healthy!

Monthly 3D Poll


Calcium Again Linked to Increased Heart Attack Risk

So, in direct conflict with the last post, and last study I discussed, here is another study that showed calcium intake being associated with an increased risk of heart attacks..

The data comes from over 61,000 Swedish women enrolled in the Swedish Mammography study that followed them for an average of 19 years. Dietary intake was assessed using food frequency questionnaires at baseline (between 1987 and 1990) and again in 1997, and calcium intakes were estimated by adding together dietary and supplemental calcium sources.

The highest rates of death from all causes, cardiovascular disease, and ischemic heart disease (but not stroke) were observed among those with a dietary calcium intake higher than 1400mg/day.

When compared to those with dietary intakes between 600 and 1000 mg/day, heart attack risk was more than doubled!

Interestingly, those with calcium intake under 600 mg/day also saw higher risk.  

However, it’s important to understand that this study did not demonstrate causality, and in fact, there doesn't seem to be a single human study that actually shows calcium intake causes heart attacks directly. This is because it the evidence shows it's a lack of vitamin K2 that is responsible for this link--not calcium--and most people are deficient in this essential vitamin.

I know this flip-flopping in the results of these studies are confusion to say the least, but stay focused on the biochemistry of this silliness and it'll all make sense.

Click HERE to read more on this topic and other studies on calcium.

Source: Long term calcium intake and rates of all cause and cardiovascular mortality: community based prospective longitudinal cohort study

Click HERE to subscribe to Know Guff by email


  1. Just last summer, I landed in ER due to heart palpitations and a mild heart arrhythmia that lasted almost a week. ( I am female, 63 years of age.) I was under a lot of stress at the time and my B/P meds were not working, so I went the calcium supplement route taking about 2,000 mg daily while my heart pounded in my chest. After doing some research upon my release from ER I realized that I was taking too much calcium, at least 2,000 mgs a day when I started having the heart arrhythmia My magnesium intake was not adequate for such a large dosage of calcium nor was I taking VitK2(M7) at time. I have since been keeping my magnesium to calcium ratio at 2:1 and take 120 mg of VitK2(M7) daily..

    After eight months on this regimen, I am happy to say that my blood pressure is now (as of this morning) 100/73 Pulse 76 and I am taking NO BLOOD PRESSURE MEDS FOR THE LAST EIGHT MONTHS!

    I personally believe magnesium and Vit K2 are what is needed to properly assimilate calcium supplements and not lay calcium deposits down in the soft tissue and arteries. I think painting calcium as the culprit in the formation of plaque deposits with a broad stroke of the brush is wrong. I think the BALANCE has to be right as far as calcium supplementation goes to include adequate magnesium and VitK2. The current recommended ratio of calcium to magnesium is 1:1 and I don't think that is adequate on the magnesium side of the equation. This is just my humble opinion. But my new regimen appears to be working for me.

    What this translates for me is I am finally free from my combination 'cocktail' B/P meds to treat an increasingly harder and harder blood pressure problem. I tried all different combinations of B/P meds and nothing worked well. After thirty years of being on these B/P meds I am now FREE!!! I couldn't be more pleased and happy!!!

    1. Wow! That's an amazing story! Thanks for sharing.

      Magnesium has been my "favourite" mineral for quite some time. So many benefits! And considering 1) calcium and magnesium compete with each other, and 2) most people are over-doing the calcium due to recommendations for osteoporosis and bone density, you can see why studies are showing that the majority of the population is deficient in this critical mineral.

      I hope your story also leads others to realize that symptoms are just your body's way of communicating that something isn't right, and many times it's lifestyle-related (including diet).

      Thanks again!

  2. I also should add that I lost about thirty pounds (still have 15 more lbs to loose but I am no longer grossly overweight) over the past 1 1/2 years but I didn't see any great reduction in my B/P numbers after the weight loss. It wasn't until I started seriously watching my magnesium to calcium ratio that I saw any results. And taking the Vitamin K (M7) is just my 'insurance policy' against creating calcium deposits in my arteries. I have also been able to get my AC1 down to 5.1 and I was diagnosed as prediabetic 2 years ago prior to getting serious about my health. I realize now that we all hold our own health in our own hands. We can't listen blindly to what is being told to us without examining where it is coming from even if it comes from our trusted doctor. Too many follow their doctor's suggestions as 'dogma' without realizing that the doctor himself may be dooped by the sales pitch of Big Pharma in the guise of 'drug sales reps'. Medicine isn't always the answer and if it is, it isn't always the ONLY answer!


Please use your name or alias. Due to a large volume of spam comments (as "Anonymous") all comments from "Anonymous" will be automatically deleted. Thanks.