What it is: Turmeric is a root related to ginger that’s native to South Asia. It’s dark brown on the outside and deep orange on the inside and has been used medicinally for more than 4,000 years to treat digestive problems and reduce inflammation.
A recent study found that a dose of 200mg per kilogram of bodyweight of turmeric was better at treating arthritis in rats than indomethacin, a non-steroidal anti-inflammatory drug. It remains to be tested whether turmeric works as well in humans, but as long as you're making dinner, you might as well throw some in.
How to use it: Tumeric is often used in curry, giving the dish a yellow tint. Try making this vegetable curry, which also contains cinnamon, for a double-dose of anti-inflammatory spice.