Sperm Quality Poorer in Rural Men
"Aquathin OP-ED Commentary"
This quick read below concerns the reduced sperm count in relation to pesticides. For all Aquathin Dealers who service rural and farming areas, I urge you to reprint, and discuss with your Sales Team so that they may further assist in educating their prospective clientele concerning pesticide removal at both POU and POE. Incidently, there are also plenty of European reports of this same scenario in both well and municipal waters. I love my Aquathin.
Sperm Quality Poorer in Rural Men
Men who live in rural parts of the United States have poorer sperm quality than men in urban areas, a new study contends, and farm pesticides may be to blame. Males in Columbia, Mo., had lower sperm quality than men in New York City, Los Angeles or Minneapolis, says lead researcher Shanna Swan, an epidemiologist and research professor of family and community medicine at the University of Missouri, Columbia.
The study appears in the November issue of the journal Environmental Health Perspectives.
Swan's team studied 512 men, all partners of pregnant women receiving prenatal care at clinics in the four study sites, and analyzed 903 sperm samples. Even though some of the men had lower sperm quality, it was not substandard enough to prevent them from getting their partners pregnant, she points out.
Still, the finding is of concern and her team will investigate further. The total number of motile (moving) sperm was lowest in the rural men. The Missouri men averaged 113 million motile sperm per sample, considered a very low count, compared to 201 million in the Minneapolis men, which is considered very healthy, Swan says. The New York City men averaged 196 million motile sperm, and the Los Angeles men, 162 million. Put another way, the total motile count (which takes into account concentration of sperm, volume of sperm and the percent that are mobile) was 58 percent lower in the Missouri men than in Minneapolis men. When she and her researchers looked at another measure of fertility, the concentration of sperm per milliliter, Swan says they also found the rural men fared worst. "A concentration of under 40 million sperm per milliliter is considered reason for concern by some experts, and a substantial number of the Missouri men had concentrations below 40," she says. The findings came as a "total surprise" to Swan, who had assumed before the study that the urban dwellers might have lower sperm quality due to air pollution. Exposure to agricultural chemicals is thought to be the cause, but Swan emphasizes that more research is needed before that can be proven. Her team controlled for age, smoking, history of infertility and other factors that might affect sperm quality.
The Columbia area is heavily agricultural, with 57 percent of the land used for farming. In the three urban areas studied, only 19 percent or less of the land is used for farming, and in some cases none of the land is devoted to farming. Blaming agricultural chemicals is a "natural guess," Swan says. "There are animal studies that show pesticides affect fertility," she says. The study comes as no surprise to fertility experts. "There has been a lot of evidence that pesticides are harmful to men," says Dr. Cappy Rothman, a male infertility expert and medical director of the California Cryobank in Los Angeles, a sperm bank. He recalls a man coming to him in the late 1980s for infertility treatment who had grown up in a rural area of Bakersfield, Calif., and drank well water that was later found to be contaminated with farming chemicals. While it couldn't be proven that the chemicals in the drinking water led to the man's fertility problems, Rothman says they could have been the cause. He praises the Swan study but says it begs more questions. "Sperm are dying," he says. "So what about the rest of the body? Are kids affected in utero, or later? And what about women?" Susan Benoff is president of the Society for Male Reproduction and Urology, and she says "the idea that there are differences in geographic areas [in semen quality] makes sense." The question that needs to be answered next, she adds, is why. Swan agrees. Her team is planning additional research in Iowa City, Iowa, an area where exposure to farming chemicals is even higher than in Columbia. She hopes to collect sperm samples from men in that area and to replicate the four-center study, to determine why rural men seem to suffer from poorer sperm quality. She adds, however, that her study shouldn't spark alarm among rural couples trying to get pregnant. Women can get pregnant from a reduced sperm count, but it may take longer, she says.
FOR THE BEST TASTE IN LIFE
Edited from Tech Bank 11/11/02