Swimming in chlorinated pools is a serious health hazard, most especially for children. Young children who spend more than a total of 20 hours in a chlorinated pool have a higher lifetime risk of respiratory infections and problems. The risk is even higher when swimming in a public pool where there are more people and more organic contamination. A 2010 study in Environmental Science & Technology has found that when sweat, urine, hair, skin, cosmetics, sunscreens, and other organics react with chlorine, some uniquely toxic chemicals are formed. These chemicals do genetic cell damage that has been linked with asthma and bladder cancer. As a practical matter, do not allow children to swim in chlorinated pools, and most especially not in large public pools. If you own a pool, switch from a chlorine system to a non-chlorine system.…

Every summer we warn against using sunscreens. First, sunscreens contain toxic ingredients. Some are better than others, but we haven’t found a single one we’d want to use or recommend. Second, sunscreens are designed to block out the sun’s ultraviolet rays. This prevents sunburn, but it also blocks out many of the sun’s benefits. We’ve been sold a bill of goods on sunlight being dangerous. Sunlight is essential to our health and well-being. While too much sun can give you a sunburn, too much of anything can be harmful. Used intelligently, sunlight is nourishing and energizing. Our bodies convert the sun’s rays into vitamin D. Sunlight increases production of the “happy hormones” that prevent anxiety and depression, it enhances immunity, and increases the oxygen content in our blood. It helps to prevent and reverse cancer. Sunlight has even been shown to lower blood pressure, cholesterol and triglycerides, and to heal wounds and any number of skin diseases. So what is “intelli…

Humans evolved to spend our days hunting and gathering in the great outdoors, getting plenty of exercise, excitement, camaraderie, fresh air and sun. Those were the good old days when the best things in life were free, including a flood of summer sunlight that created as much vitamin D as it penetrated our bare skin as we would need all year round.  But we moved further and further from the equator, where sunlight is most abundant, and began spending more and more of our lives indoors. We adopted a less healthy diet with fewer and fewer fresh fruits and vegetables with their antioxidants that protected us from potential damage by the sun, and medical authorities began recommending sun avoidance and sunscreens, the weakest of which (PF8) block 95% of the sun’s vitamin-D producing UVB rays. (See here on using the sun intelligently to still get free vitamin D.) Vitamin D deficiency is now so widespread that alternative doctors say virtually every new pa…