Eggshell Calcium: What It Does for Humans and Animals
Calcium from eggshells does not effectively nourish the human body. In modern practice, this material is primarily redirected to animal nutrition and agricultural uses, where it helps enrich animal feed and improve soil fertility. This shift reflects current understanding of calcium bioavailability and the best ways to meet daily calcium needs.
Historically, crushed eggshells were given to children and pregnant or breastfeeding individuals as a calcium source. That approach is no longer common in clinical or nutritional guidance. Today, eggshells are mainly utilized in farming to support livestock nutrition and soil health rather than as a dietary supplement for people.
Calcium in eggshells occurs mainly in the form of calcium carbonate, a compound that the human body does not absorb efficiently. For human nutrition, calcium citrate and other well-absorbed forms are generally preferred, especially for individuals with reduced stomach acid or absorption issues. When calcium is needed, choosing a highly bioavailable supplement can make a noticeable difference in how well the body utilizes it.
In addition to the form of calcium, it is important to consider sources of the mineral. Dairy products, fortified plant milks, leafy greens, and fortified cereals can contribute to daily calcium intake. A balanced approach to calcium also includes adequate vitamin D, which plays a crucial role in calcium absorption and bone health.
Responses to supplements vary among individuals. Taking vitamin D and calcium together should be discussed with a healthcare professional, particularly for people with kidney or heart conditions. Medical guidance helps ensure that supplementation is appropriate, safe, and aligned with overall health goals.
Practical guidance focuses on obtaining calcium through nourishing foods and, when needed, high-quality supplements. For many people, meeting the daily target is easier with a mix of dairy or fortified foods and a carefully chosen supplement, under professional advice.
Ultimately, it is wise to be mindful of the body’s calcium needs and to prioritize dietary sources first. Supplements should support, not replace, a well-rounded diet and healthy lifestyle choices.