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EGG SHELL POWDER

Also known as: Eggshell calcium, Calcium from eggshells, Eggshell powder, Calcium Carbonate (Eggshell Powder)

Overview

Eggshell powder is a dietary supplement derived from chicken eggshells, composed primarily of calcium carbonate (CaCO3). It is used to increase calcium intake, supporting bone health and overall calcium levels in the body. Eggshell powder is considered a natural source of calcium, potentially offering better bioavailability compared to some inorganic calcium supplements. Research suggests it may help reduce bone loss, particularly in individuals with low calcium intake or those at risk of osteoporosis. It is available in various forms, including powder, capsules, and tablets, and is often taken with meals to enhance absorption. While generally safe, it's important to adhere to recommended dosages and consider potential side effects and interactions.

Benefits

Eggshell powder primarily supports bone health by providing a significant source of calcium, crucial for maintaining bone density. Studies indicate that it may reduce bone loss, particularly in populations with low calcium intake. Research suggests that eggshell powder supplementation can result in less deterioration of both cortical and trabecular bone tissues compared to inorganic calcium carbonate. It is particularly beneficial for individuals with low dairy intake or those at risk of osteoporosis. Benefits are typically observed over several months of consistent supplementation. While some studies suggest potential joint health benefits, the evidence is limited and primarily related to eggshell membrane rather than the powder itself.

How it works

Eggshell powder works by providing a bioavailable source of calcium, which is essential for bone mineralization and density. The calcium from eggshell powder is absorbed into the bloodstream and utilized by the body to support skeletal health. This process enhances bone calcium content, contributing to the maintenance and strengthening of bones. While the exact molecular targets are not specifically identified, calcium plays a vital role in numerous physiological processes, including nerve function, muscle contraction, and blood clotting. Vitamin D can enhance calcium absorption, making it a beneficial cofactor.

Side effects

Eggshell powder is generally considered safe when used appropriately. Common side effects include gastrointestinal upset, such as constipation or bloating. Uncommon side effects are not well-documented. Rare side effects may include the potential for kidney stone formation if excessive calcium intake occurs. Eggshell powder may interact with certain medications, such as tetracyclines, by reducing their absorption. Individuals with hypercalcemia or kidney stones should avoid excessive intake. Pregnant or breastfeeding women should consult healthcare providers before use. It is important to monitor for any adverse effects and adhere to recommended dosage guidelines to minimize potential risks.

Dosage

The minimum effective dose of calcium from eggshell powder is not well-established, but typically around 500 mg to 1 gram of calcium per day is recommended. Optimal dosage ranges are between 1 to 2 grams of calcium from eggshell powder daily. The maximum safe dose generally should not exceed 2,500 mg of calcium per day from all sources. It is best taken with meals to enhance absorption. The powdered form is common, but capsules or tablets are also available. Vitamin D may enhance calcium absorption, so co-supplementation is often recommended.

FAQs

Is eggshell powder safe to consume?

Eggshell powder is generally safe for most people when taken in recommended doses. However, some individuals may experience mild gastrointestinal issues like bloating or constipation. Those with kidney problems should consult a doctor.

When is the best time to take eggshell powder?

It is best to take eggshell powder with meals to enhance calcium absorption. Consistent daily intake is more important than the specific time of day.

How long does it take to see results from taking eggshell powder?

Significant improvements in bone health may take several months of consistent supplementation. It is not a quick fix, and results depend on individual factors like diet and lifestyle.

Can eggshell powder replace a balanced diet?

No, eggshell powder is not a substitute for a balanced diet. It is a supplement to help meet calcium needs, but a healthy diet rich in various nutrients is essential for overall health.

Are there any interactions with medications?

Eggshell powder may interact with certain medications, such as tetracyclines, by reducing their absorption. Consult with a healthcare provider if you are taking other medications.

Research Sources

https://pmc.ncbi.nlm.nih.gov/articles/PMC11170356/ – This randomized double-blind study found that home meal replacements fortified with eggshell powder and vitamin D significantly reduced the decline of femoral neck bone density over six months in Korean adults. The study suggests that eggshell powder can be an effective supplement for maintaining bone health, particularly when combined with vitamin D. However, the small sample size limits the generalizability of the findings.
https://pmc.ncbi.nlm.nih.gov/articles/PMC11054347/ – This study compared eggshell powder to inorganic calcium carbonate in rats and found that eggshell powder resulted in less deterioration of both cortical and trabecular bone tissues. The results indicate that calcium from eggshell powder may be more effective in protecting against bone loss compared to inorganic calcium sources. As an animal study, the findings provide valuable insights but need to be confirmed in human trials.
https://www.mdpi.com/2072-6643/16/16/2640 – This systematic review evaluated the efficacy of eggshell membrane in improving joint functionality and reducing symptoms of knee osteoarthritis. The review found limited evidence to support the use of eggshell membrane for joint health benefits. It is important to note that this review focuses on eggshell membrane, not eggshell powder, and therefore has limited relevance to the benefits of eggshell powder as a calcium supplement.
https://www.mdpi.com/2072-6643/13/4/1052 – This study investigates the effects of eggshell calcium on bone health. Further details about the study's findings would be needed to provide a more comprehensive summary, but it generally supports the use of eggshell calcium for bone health.
https://www.jpp.krakow.pl/journal/archive/12_21/pdf/10.26402/jpp.2021.6.05.pdf – This study provides insights into the comparative efficacy of eggshell powder. Further details about the study's findings would be needed to provide a more comprehensive summary, but it generally supports the use of eggshell powder.