Ingredients Exposed Series: Calcium Sulfate
The “plaster additive” in your food and supplements What sounds like an innocent mineral supplement or baking aid is actually a refined industrial compound often used as a firming agent, flour treatment, or calcium source. “Calcium sulfate” (also known as gypsum) is added to foods and supplements, but depending on source and processing, it can carry contaminants and cause digestive, metabolic, or mineral imbalance concerns. 𝗪𝗵𝗲𝗿𝗲 𝗬𝗼𝘂’𝗹𝗹 𝗙𝗶𝗻𝗱 𝗧𝗵𝗶𝘀 𝗣𝗹𝗮𝘀𝘁𝗲𝗿 𝗔𝗱𝗱𝗶𝘁𝗶𝘃𝗲 Calcium sulfate (listed as “calcium sulfate,” “gypsum,” E516, or “food-grade calcium”) shows up in: • Packaged tofu (as a coagulant) • Baking powders and self-rising flours • Pickles and canned vegetables (as a firming agent) • Fortified nutritional supplements, protein powders, and meal replacements • Certain processed cheeses and breads 𝗪𝗵𝗮𝘁 “𝗖𝗮𝗹𝗰𝗶𝘂𝗺 𝗦𝘂𝗹𝗳𝗮𝘁𝗲” 𝗔𝗰𝘁𝘂𝗮𝗹𝗹𝘆 𝗜𝘀 A mineral compound (CaSO₄) used for: • Firming, stabilizing, or coagulating foods • Adding calcium in fortified foods or supplements Industrial roles: • Plaster, wallboard, cement, and desiccant in non-food industries • Food-grade sources are purified but can still carry impurities if manufacturing standards vary In the body: • Overconsumption may contribute to digestive upset, constipation, or altered mineral balance • Chronic high intake may affect kidney or cardiovascular health in sensitive populations 𝗛𝗼𝘄 𝗜𝘁 𝗖𝗮𝗻 𝗛𝗮𝗿𝗺 𝗬𝗼𝘂𝗿 𝗕𝗼𝗱𝘆 𝗚𝗶𝘁𝗮𝗹 𝗗𝗶𝘀𝗿𝘂𝗽𝘁𝗶𝗼𝗻: Excess intake can cause bloating, constipation, or interfere with absorption of other minerals. 𝗥𝗲𝗻𝗮𝗹 𝗦𝘁𝗿𝗲𝘀𝘀: High-dose supplemental calcium sulfate may burden kidneys, especially with preexisting kidney issues. 𝗖𝗵𝗲𝗺𝗶𝗰𝗮𝗹 𝗖𝗼𝗻𝘁𝗮𝗺𝗶𝗻𝗮𝗻𝘁 𝗥𝗶𝘀𝗸: Depending on the source, traces of heavy metals (lead, arsenic) or industrial residues may persist. 𝗔𝗰𝗰𝘂𝗺𝘂𝗹𝗮𝘁𝗲𝗱 𝗦𝗼𝘂𝗿𝗰𝗲 𝗕𝘂𝗿𝗱𝗲𝗻: Common in multiple processed foods and fortified supplements across a diet. 𝗧𝗵𝗲 𝗥𝗲𝗴𝘂𝗹𝗮𝘁𝗼𝗿𝘆 𝗕𝗲𝘁𝗿𝗮𝘆𝗮𝗹 • EU/UK/Australia: Permitted as a food additive (E516) with purity standards; toxicity concerns generally tied to overuse or contaminated sources.