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tips for Shanghai Daily▓ readers. Category 1: Soybean and milk products Bean curd and spinach When bean curd and spinach a▓re eaten at the same time, they affe▓ct absorption of calcium and may lead to blockages ▓in the abdomen. Spinach contains oxalic acid, which can re▓act with the calcium in bean curd in the intesti

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nes and form insoluble precipitates of calcium oxalate. The foods taken together affect the absorption of calcium. Bean curd and gr▓een onion The combination of bean curd ▓and green onions may affect the absorption of calcium. Bean curd contain

s plenty of ▓nutrition like protein and calcium.▓ But green onions contain a great deal▓ of oxalic acid. When calcium meets oxalic acid, the calcium oxalate they form destroys calcium. If one eats bean▓ curd mixed with green onions over a long time, it can lead to a lack of calcium causing spasm▓s, osteomalacia and fractures. Milk and chocolate Believe it or not, milk and chocolate do not▓ match. While milk is rich in protein and calcium, chocolate contains oxalic acid. Eaten toge▓ther, the calcium from milk

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and the oxalic acid of chocolate can combine and form insoluble calcium oxalat▓e, which is not only indigestible but also can cause diarrhea. Milk and pomelo The protein in milk can react with the fruit acids in pomelos and ma▓ke one's stomach

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feel bloated. The acid can also over-stimulate the stomach and cause diarrhea. ▓Lactic acid drink and ham Many people▓ like having a sandwich with yogurt. ▓However, ham and bacon in sandwiches, when taken with ▓yogurt, could cause cancer. To ext

end the preservation of meat products, producers add nitrate t▓o prevent decay and botulinus. But when nitrate meets orga▓nic acid, it can turn into nitrosamine, a carcinogen. Soy milk and egg Soy milk contains nutrition including vegetable proteins, fats, carbohydrates, vitamins a▓nd minerals. If drunk by itself, it is very nourishing. However, if taken together with eggs, it can reduce the activity of protease, which helps the body ass▓imilate protein. Eggs are, of course, very rich in protein. Various countries coping with the food ▓crisisDuring the food summit, people in the world's▓ most populated Arab country Egypt are complaining about high food prices. And Latin▓ American countries are taking various meas▓ures to cope with rising prices. Egypt is dependent on imp▓orted food and has been wracked by social unrest as many people struggle with stagnant wages and high inflation.Mohamed Farouk, Cairo resident, said, "Before▓, with ten Egyptian pounds, about 1.87 US dollars you could get a bottle of oil and one kilo of sugar but now i▓t does not even buy one bottle of oil."Egyptian officials▓ also warn

ctions. She▓ offers some
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