This chapter contains sections titled:

• Menopause

• Risk Factors of Early Menopause

• Hormonal Change

• Clinical Features of Menopause

• Perimenopausal Evaluation

• Management of Perimenopausal Syndrome

• Summary

• Male Hypogonadism (Andropause)

• Decline in Testosterone with Aging

• Pathophysiology of Hypogonadism

• Effects of Testosterone Replacement in Older Adults

• Testosterone Therapies

• Conclusion

• Key References

• References