Many of you probably already know about the Hungarian craze for light water. Just in case you don’t here it is:
Deuterium, the molecule of hydrogen with two neutrons and one proton occurs naturally in water at the rate of 150 parts per million. The concentration differs depending on geography. Water is more depleted of deuterium in lakes than in the ocean, more depleted at the poles and at higher altitudes, meaning it is lighter. Since some people living high in mountainous regions appear to live much longer than sea level lifespan, credit is given to light water.
You can buy your own light water and drink as much of it as you want. It is available here and here for roughly $8 per gram. The water on the market is 3 parts per million of deuterium. Feel free to mix it to any proportion with tap water that you can afford. You are supposed to live longer if you drink it at 40 parts per million.