Turmeric. This herb of the ginger family provides the yellow color in curries. It's a powerful antioxidant and has been used in Indian and Chinese medicine for centuries. Preliminary studies suggest it may help prevent or even treat Alzheimer's disease. In some Indian villages where turmeric is popular, there are unusually low rates of Alzheimer's.
Turmeric also enhances immune function, improves digestion and may reduce your risk of heart attack. Because of its anti-inflammatory properties, scientists are studying curcumin, one of the most active substances in turmeric, as a possible treatment for cystic fibrosis.
Ginger. Studies have demonstrated that ginger is effective in preventing the symptoms of motion sickness, especially seasickness. In addition, it can be useful in reducing the nausea and vomiting brought on by pregnancy. To get the stomach-calming benefits, simply steep an ounce or two of fresh gingerroot in a cup of hot water.
Ginger also contains an inflammation-fighting substance called gingerol, which may help reduce pain and improve function in people who have arthritis.