Posted on December 10, 2014 by admin - No Comments
Sunblock
Although fertility is outside the scope of my practice as a sports medicine specialist in San Diego, I advocate the use of sunblock during outdoor activities. As a result, I want to make sure that my patients are well aware of issues that may arise from sunblock.
With the strange weather many areas have been having in the US lately, many people keep heading to the beach. And, just like during the summer, they’re taking to exercise, cycling and running, especially in San Diego. With an active lifestyle such as this, using sunblock for protection is a must. But, a new National Institutes of Health study shows that we should all be aware of what’s in the sunblock products we use.
For years, experts have recommended sunscreens to help protect us from UV rays. Now, according to the study, the chemicals responsible for filtering out those rays may be causing other problems. These chemicals may actually lead to fertility problems in men.
Studies Show Sunscreen Chemicals May Cause Male Infertility
An even larger study was involved, the Longitudinal Investigation of Fertility and the Environment. It examined the connection between fertility and environmental chemicals. 500 couples were chosen from this study, and followed around as part of the smaller National Institutes of Health study. Urine samples were collected from these couples. They were also asked to keep journals until they’d successfully conceived, or had unsuccessfully tried to for 12 months.
The study authors took deep looks at the data behind the couples who took the longest to get pregnant. They all seemed to have one thing in common:
Two chemicals responsible filtering UV rays, 4OH-BP and BP-2, were found in the urine of the men. Both chemicals, which are common in sunscreens and sunblocks, were in high concentrations in their systems. These same two chemicals can also be found in many shampoos and moisturizers.
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