Red onions are one of those everyday foods that rarely receive much attention. They are inexpensive, easy to find, and appear in everything from salads and sandwiches to soups and cooked meals. But behind their distinctive purple-red color is an interesting nutritional profile. Red onions provide fiber, vitamin C, sulfur-containing compounds, quercetin, and anthocyanins —plant compounds that have attracted attention for their antioxidant properties. When eaten regularly as part of a varied diet, red onions can be a simple way to add flavor and useful nutrients without relying on complicated wellness routines. So, what makes red onions interesting from a nutritional perspective, and what can they realistically do for your health? 🧅 What Makes Red Onions Different? The deep red and purple shades of red onions come partly from anthocyanins , a family of naturally occurring plant pigments. Red onions also contain quercetin , a flavonoid found in several fruits and vegetables, along w...