Write the word osteoporosis on the board. Have students recite the word aloud. Poor calcium intake over a long period of time can contribute to osteoporosis. Osteoporosis makes the bones weak and brittle. Osteoporosis may lead to decreased height, bone fractures and loss of teeth.
Students demonstrate effects of osteoporosis.
Ask students to stand up straight. Then have them hump their backs. Explain them that this is one of the effects of not eating enough calcium. Lack of calcium also weakens other bones in the body. Lack of calcium weakens teeth.