Jeff Csatari demonstrates how to test your lung capacity, New York City, N.Y. RELATED LINKS Take the Anti-Aging IQ Quiz

We can't promise the fountain of youth, but we can offer information on a few cutting-edge measures that some say can add a few years to your life.

• First, consider the radical world of human growth hormone, or HGH. HGH can be taken orally or via injection. The supplement is meant to replace the diminishing HGH that our bodies naturally produce, and it promises everything from enhanced energy to slowed aging. But watch out — our experts think this one is scary. Human growth hormone declines in our bodies as you grow older
  
• Studies have actually proven that certain animals that eat 30 percent less live 30 percent longer. Though it hasn't proven true in humans yet, that's not stopping some dieters from adopting the "calorie restriction diet." It's not for everyone, and most Americans will suffer some pretty serious hunger pains with this one. For instance, that morning cappuccino and muffin you've been eating would represent 3/4 of your daily intake on this diet!
  
• "Going raw" is another recent craze. Imagine uncooked, no-pasta, no-meat, no-cheese lasagna. Well, there are restaurants that actually make such a thing and even make it taste good. Enthusiasts say eating foods with their enzymes intact aids digestion and puts less stress on the system.
  
• While more radical methods may sound intriguing, our experts recommend treading carefully.
  
• If you don't already have one, consider getting a pet. Studies show that pets lower blood pressure, increase the odds of surviving a heart attack and can add years to your life.