How Do the Lymphatic and Immune Systems Contribute to Osteoporosis

Multiple Choice

How do the lymphatic and immune systems contribute to osteoporosis?

A) Excessive smoking lowers estrogen levels, which increases bone loss.
B) Immune cells resist infections and release chemicals that promote tissue repair.
C) Calcium ions released from the bones are excreted.
D) Lack of exposure to sunlight reduces vitamin D production and decreases calcium absorption.
E) Decreased estrogen levels following menopause contribute to the disease.