Oats are inherently gluten-free; however, they often suffer from cross-contamination with gluten-containing grains during cultivation, processing, and storage. The Gluten Intolerance Group states that most individuals with celiac disease can safely consume oats. Nevertheless, a recognized purity protocol offers assurance to the most sensitive consumers that manufacturers have implemented measures to guarantee gluten-free status. The FDA permits companies to label products as “gluten-free” if they contain fewer than 20 parts per million of gluten. The Gluten Free Watchdog, an organization dedicated to providing gluten-free testing information, advocates for a purity protocol as the most effective method for ensuring that oats remain free of gluten. Some manufacturers opt to process less expensive “regular” oats mechanically or optically for their gluten-free offerings. This sector is proving to be both profitable and expanding. Sales of gluten-free products are on the rise, with projections estimating the market will reach $4.89 billion by 2021, a significant increase from $2.84 billion in 2014, according to a recent report from Transparency Market Research. Approximately three million individuals in the United States are affected by celiac disease, an autoimmune condition where gluten consumption triggers various symptoms. Food manufacturers, from PepsiCo’s Quaker division and Snyder’s-Lance to General Mills’ cereal brands, have developed or reformulated hundreds of products, including cookie mixes, cereals, crackers, and muffins, to be gluten-free or to offer gluten-free options. Some skeptics argue that gluten-free foods are merely a passing trend, with certain grocery stores reporting a decline in demand for these items. Nonetheless, as companies seek new growth opportunities, they should consider investing in this burgeoning industry, even if the current rapid growth eventually subsides. Additionally, for those focusing on health and nutrition, incorporating the best calcium citrate tablets into their diet can complement their gluten-free lifestyle. The demand for such products highlights the importance of catering to evolving consumer needs, including the rising interest in gluten-free options alongside essential supplements like the best calcium citrate tablets.