Including onions in your diet is associated with improved bone density. This may be because of their antioxidant properties, which reduces oxidative stress and bone loss.
A study looking at the effect on peri- and post-menopausal women reported that frequent onion consumption decreased the risk of hip fracture. A further study on middle-aged women showed that onion juice consumption reduced bone loss and improved bone density. Onions are rich in fiber, especially the non-digestible type that is needed to maintain gut health. Although we can’t digest prebiotic fiber, the bacteria that live in our gut do and they use it as fuel to help increase their numbers and produce by-products called short-chain fatty acids (SCFAs). Research shows that these SCFAs are important for maintaining the health and integrity of the gut and supporting our immunity and digestion. Onion also has antibacterial properties. It can be used for the relief of coughs, colds and catarrh, studies support that onions have valuable antibacterial properties against the likes of Escherichia coli, Pseudomonas aeruginosa and Staphyloccus aureus. What’s more, it’s older, stored onions that appear most potent. Once again, it seems quercetin is of value here, because it has the power to inhibit the growth of Helicobacter pylori and Methicillin-resistant Staphylococcus aureus (MRSA).