It causes swelling (edema) of the legs. It can also cause sores on the legs. Muscles in your feet and legs help your veins move blood to the heart against gravity. The veins also have one-way valves that keep the blood from flowing backwards. The valves work like one-way gates.
This article is about the children's book by Dr. Seuss. For other uses, see Lorax (disambiguation) . The Lorax is a children's book written by Dr. Seuss and first published in 1971. It chronicles the plight of the environment and the Lorax, who speaks for the trees against the greedy Once-ler.
It's more than 40 years since Dr Seuss first published The Lorax, his classic tale of needless consumerism and environmental ruin.