Shrimp
Onions combined with shrimp will form calcium oxalate, which increases the risk of calcium-oxalate stone formation. Therefore, when cooking, no matter how much shrimp you like, you should not cook with this food.
Fish
Fish contains many nutrients, very rich in protein, extremely good for health but when combined with onions will make fish protein precipitated, deposited in the stomach, not only reducing nutrients, but also causing difficult phenomena pepper, bloating.
Honey
Combining onions with honey is not a smart choice for any housewife. These two foods will easily damage the eyes, may even lead to blindness.
Seaweed
Seaweed contains many iodine and calcium. Meanwhile, onion is rich in oxalic acid. Eating seaweed and onions will increase the risk of stone formation in the body. So do not eat seaweed with onion.
The miraculous uses of onions are not everyone knows
Anti-cancer : Onions are tubers rich in quercetin and selenium, which have antioxidant effects, reduce the risk of cancer and strengthen the body's immune system.
Calcium supplementation: According to health experts, onions contain relatively high levels of calcium, even comparable to calcium in cabbage, canola or other nutritious foods.
Gut improvement : Like burdock, asparagus and onions contain oligosaccharides, a special substance that is not digested by the stomach and small intestine.
Lose weight, cure constipation : Onions are very high in fiber, making us feel fuller. They are considered healthy and effective slimming foods from nature.
Cold room : Thanks to the spicy, warm, onion is a kind of help to eliminate gas welding, reduce fever, and prevent colds and reduce nasal congestion effectively.
Anti-inflammatory: Onions are the only plants that contain prostaglandin A, which relaxes blood vessels and reduces the viscosity of blood. Therefore, this tuber is considered a very effective remedy for reducing inflammation and hypotension.