Associations Of Calcium Intake And Calcium From Various Sources With Blood Lipids In A Population Of Older Women And Men With High Calcium Intake

This study examined whether calcium intake from different food sources affects cholesterol and other blood fats in 717 older adults (average age around 70) living independently in Switzerland. Researchers were particularly interested in this question because some people avoid dairy products due to concerns about saturated fat and cholesterol, even though dairy is a major source of calcium needed for bone health.

The researchers tracked participants' diets over time using detailed food questionnaires and measured their blood lipid levels, including total cholesterol, HDL ("good") cholesterol, and triglycerides. They found that people with higher total calcium intake had better lipid profiles overall - lower total cholesterol, lower triglycerides, and higher HDL cholesterol. When they looked at specific calcium sources, the benefits came primarily from dairy products, especially milk and milk-based desserts, particularly low-fat and non-fermented dairy items. Interestingly, calcium from cheese or high-fat dairy products didn't show the same benefits, and neither did calcium from non-dairy sources.

The study also looked at calcium supplements and found some initial benefits for triglycerides and HDL cholesterol, but these effects disappeared when other factors were taken into account, suggesting food sources may be more beneficial than supplements. This research suggests that for older adults concerned about both bone health and heart health, incorporating low-fat dairy products rather than avoiding all dairy might be the better strategy. This finding supports clinical recommendations to focus on whole food sources of nutrients rather than just supplements, and helps patients make informed decisions about balancing their calcium needs with cardiovascular health goals.