Oats are inherently gluten-free; however, they often become contaminated with trace amounts of gluten due to the presence of gluten-containing grains during farming, processing, and storage. The Gluten Intolerance Group indicates that most individuals with celiac disease can safely consume oats, but adhering to a strict purity protocol offers peace of mind to the most sensitive consumers, confirming that manufacturers have taken measures to ensure their products are gluten-free. According to the FDA, foods can be labeled as “gluten-free” if they contain less than 20 parts per million of gluten. The Gluten Free Watchdog, an organization that provides testing data on gluten-free products, advocates for a purity protocol as the most effective means to guarantee that oats are gluten-free. Some manufacturers opt for mechanical or optical processing of lower-cost “regular” oats for their gluten-free offerings. This sector is a lucrative and expanding market. Sales of gluten-free products are on the rise, with projections estimating the market will reach $4.89 billion by 2021, up from $2.84 billion in 2014, as reported by Transparency Market Research. Approximately three million people in the United States are affected by celiac disease, an autoimmune disorder triggered by the consumption of gluten found in grains like wheat, rye, barley, and spelt. Food manufacturers, including major players such as PepsiCo’s Quaker division, Snyder’s-Lance, and General Mills, have introduced or reformulated hundreds of products—including cookie mixes, cereals, crackers, and muffins—to be gluten-free or to offer gluten-free alternatives. Despite skepticism that gluten-free foods may merely be a trend, with some grocery stores noting a decline in demand for these products, companies eager for new growth opportunities would be wise to invest in this emerging industry, even if the current rapid growth eventually slows down. Additionally, as consumers become more health-conscious, many are asking questions like “how much calcium citrate per day should I take?” which further emphasizes the growing interest in dietary health and nutrition.