A lifetime of low-level exposure to lead in the environment may contribute to mental decline as we age, reported researchers at Harvard School of Public Health in 2005.  Tracking 466 men averaging 67 years of age, the team found that the higher the men's level of lead present in the kneecap, a bone marker of cumulative lead exposure, the worse they scored in tests of memory, attention, language, and other mental functions.  A separate study by researchers at Brigham and Women's Hospital (USA) found that accumulated lead exposure increases the risk of cataracts, a leading cause of age-related blindness. The team tracked 642 men aged 60 and older for five years, finding that those who developed cataracts had increased levels of lead in their bones. 

Older people, who are prone to osteoporosis, are particularly vulnerable to the damaging effects of lead because the toxin lodges in bone poses and can be released over a long period of time into the bloodstream, allowing it to damage body tissue.

Lead is no longer present in gasoline and paints available in the U.S., but leaded products may be available in other nations, putting those residents at-risk.  Drinking water may also be a possible source of lead, as the toxin can be introduced via older plumbing.

The New Anti-Aging Revolution, available from A4M, shares insights on environmental hazards that may affect longevity, and how we might reduce these risks.  Call to order (US tel: 773-528-4333), or visit the World Health Network Bookstore online at http://www.worldhealth.net