In learning more about the varicose veins and the vascular system,
you may want to visit these links:
Government Sites
National Heart, Lung & Blood Institution
http://www.nhlbi.nih.gov
U.S. Food & Drug Administration
http://www.fda.gov/
National Institutes of Health
http://www.nih.gov/
U.S. Department of Health and Human Services
http://www.os.dhhs.gov/
Risk Factors Links Smoke Free Society
http://www.smokefreesociety.org/
American Obesity Association
http://www.obesity.org/
Pulmonary Hypertension Association
http://www.phassociation.org/
American Society of Hypertension
http://www.ash-us.org/
Clinical Trials/Research Cardiopulmonary Research
Science & Technology Institute
http://www.crsti.org/
Statistics National Center for Health Statistics
http://www.cdc.gov/nchs/
Texas Department of State Health Services
http://www.dshs.state.tx.us/wellness/default.shtm