Can High-Calcium Milk Powder Be Effective for Breakfast?

Is calcium-fortified milk powder effective for calcium absorption when consumed for breakfast?

I bought high-calcium milk powder that contains "calcium carbonate." I plan to give it to elderly individuals and consume it myself.
However, calcium carbonate requires stomach acid for absorption, so online information suggests taking it "after meals." If I drink the high-calcium milk powder as breakfast in the morning without having eaten anything else, will I still be able to absorb the calcium from the calcium carbonate? Additionally, I've heard that elderly individuals have reduced stomach acid secretion.
Will taking it as breakfast still allow for calcium absorption?

Kai, 20~29 year old female. Ask Date: 2017/06/14

Dr. Cai Xiuwen reply Nutrition

Hello! The calcium in milk can indeed be influenced by whether it is consumed on an empty stomach, as older adults may experience increased absorption rates when taking it on an empty stomach.
Due to decreased gastric acid secretion in the elderly, it is advisable to consume smaller, more frequent meals, and milk can be supplemented between meals.
The form of calcium that is most easily absorbed is calcium citrate, while calcium carbonate is the most common.
Therefore, commercially available high-calcium foods often contain added calcium carbonate, which is also absorbable.
This information is provided by Dietitian Tsai Hsiu-Wen from Nantou Hospital, Ministry of Health and Welfare.

Reply Date: 2017/06/14

More Info

When considering the effectiveness of high-calcium milk powder, particularly one that contains calcium carbonate, as a breakfast option, it's essential to understand how calcium absorption works in the body, especially in the context of age-related changes in digestion.

Calcium carbonate is a common form of calcium supplement that requires an acidic environment for optimal absorption. This means that taking it on an empty stomach, such as first thing in the morning before consuming any food, may not be the most effective way to ensure maximum calcium uptake. The presence of food, particularly acidic foods, can enhance the solubility of calcium carbonate, making it easier for the body to absorb.

For older adults, who often experience decreased gastric acid production, the situation becomes more complex. Reduced stomach acid can hinder the absorption of calcium carbonate, leading to concerns about whether they are getting enough calcium from high-calcium milk powder consumed on an empty stomach. Therefore, while it is possible for some calcium to be absorbed, the efficiency may be significantly lower compared to when it is consumed after a meal.

To optimize calcium absorption, it is advisable for older adults to consume calcium carbonate-containing products alongside or after meals. This approach not only provides the necessary acidic environment for better absorption but also helps to mitigate any potential gastrointestinal discomfort that may arise from taking supplements on an empty stomach.

Moreover, it is worth noting that calcium absorption is influenced by various dietary factors. For instance, the presence of certain nutrients, such as vitamin D, can enhance calcium absorption, while others, like oxalates and phytates found in some plant foods, can inhibit it. Therefore, a balanced diet that includes a variety of nutrients is crucial for maintaining adequate calcium levels.

In summary, while high-calcium milk powder containing calcium carbonate can be beneficial, it is best consumed with or after meals to enhance absorption, particularly for older adults who may have reduced stomach acid. Additionally, considering other dietary sources of calcium, such as leafy greens, fortified foods, and dairy products, can contribute to overall calcium intake. If there are specific health concerns or dietary restrictions, consulting with a healthcare professional or a registered dietitian can provide personalized guidance tailored to individual needs.

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