Asparagus has a relatively high nickel content and can trigger allergic reactions in people with nickel allergies. Symptoms appear on the skin or in the gastrointestinal tract.
Asparagus is considered very healthy because it contains plenty of potassium, vitamins, and valuable secondary plant substances. Some of them, including anthocyanins or carotenoids, are said to have anti-cancer and antibacterial effects. The stalk vegetables are low in calories and fat and stimulate digestion and kidney activity thanks to their high fiber and asparagine content. In rare cases, however, the vegetables are not tolerated. Anyone who suffers from a severe nickel allergy should be careful when peeling the sticks. The first signs of contact allergy are itching, burning, or pain on the skin. Redness, swelling, and blisters can also be caused by eating asparagus. The vegetables themselves also have “allergenic potential” and can cause allergic reactions if they contain too much of the plant’s essential nutrients.