My friend introduced me to dried small shrimps or 虾皮. I grabbed a packet when I saw it in the Asian market. When you shake the packet, the dried small shrimps should be loose, if it sticks together then it is a bad stock. Because this dried small shrimps hardly have any meat in it so it is very rich in protein and minerals, especially calcium, iodine, and magnesium. It's so packed with calcium that it's considered a "calcium power house" and said to prevent osteoporosis. The magnesium in it is said to reduce blood cholesterol level, regulate the blood flow and help in hypertension. These dried small shrimps/ 虾皮 is so delicious that it helps to improve appetite in the elderly. You can make it into powder form ( wash, pat dry, pan-fry it a wok with a little oil/without until crispy and brown and then process in a food processor until it turns into powder) and sprinkle on rice or porridge.
It is suitable for all ages, elderly, pregnant women, people with cardiovascular disease, kidney deficiency, impotence, male infertility and weakness of waist and legs. But it is NOT suitable for people suffering from allergic rhinitis, bronchitis, recurrent allergic dermatitis in the elderly and people with chronic disease.
One thing worth mentioning though, while doing the research on this, I found that this 虾皮 is not suitable to consume at night or before going to bed. As the extra calcium that wouldn't be absorbed by the intestine needed to be discharged. And the peak hours for the calcium to be discharged from the body was 4-5 hours after a meal. So eating 虾皮 at night might prevent the discharge of the extra calcium through urination as you would be asleep at that time. So, the calcium in the urine would be trapped and deposited in the urinary tract and overtime would form the urinary tract stones.
I found the above sources from various Chinese sites. Fill me in if you know more about this dried small shrimps.