Middle-aged and older men who get enough antioxidants in their diets may have better-quality sperm than men who are lacking in the nutrients, Reuters reported in New York, Sunday.
Quoting a research report, the agency said that among men age 45 or older, those who got the most vitamins C and E, folate and zinc tended to have fewer DNA-strand breaks in their sperm.
That is a measure of the genetic quality of sperm, which is known to decline as a man ages.
The findings, reported in the journal Fertility and Sterility, do not prove that antioxidants directly improve sperm quality - or boost the chances of a healthy pregnancy.
"People who eat well are probably doing a bunch of other healthy things, too," noted senior researcher Andrew Wyrobek, of the Lawrence Berkeley National Laboratory in California.
But it was not overall nutrition that was linked to older men's sperm quality. "It was the antioxidants specifically," he said.
Antioxidants help mop up reactive oxygen species, by-products of cellular metabolism, which can cause genetic damage.
The study included 80 healthy, non-smoking men between the ages of 22 and 80. They filled out a questionnaire on diet and supplement use, and gave sperm samples.
Among men ages 45 and up, those who got the most vitamin C had 20 percent less DNA damage than those who took in less of the vitamin. Men in that high-intake group typically got about 700 milligrams of vitamin C a day; the recommended amount for men is 90 mg, but an intake as high as 2,000 mg is considered safe.
The findings were similar when the researchers looked at vitamin E, zinc and folate, though the differences in sperm DNA damage were smaller. Again, older men in the high-intake groups typically got more of each nutrient than is recommended, but were still well within the safe ranges.
The researchers found no link between antioxidant intake and sperm quality in younger men.
Wyrobek speculated that in younger men, the body may be under less "oxidative stress", or it may be more efficient at neutralizing that stress.
|

Ç×»êȹ°Áú, Á߳Ⳳ¼º Á¤ÀÚ Áú °³¼±
Ç×»êȹ°ÁúÀÌ Áß³â ÀÌ»ó ³²¼ºÀÇ Á¤ÀÚ ÁúÀ» °³¼±ÇÏ´Â È¿°ú°¡ ÀÖ´Ù´Â ¿¬±¸°á°ú°¡ ³ª¿Ô´Ù.
¹Ì±¹ ·Î·±½º ¹öŬ¸® ¿¬±¸¼ÒÀÇ ¾Øµå·ç ¿ÍÀ̷κ¤(Andrew Wyrobek) ¹Ú»ç´Â Àü¹®Áö ÃÖ½ÅÈ£¿¡¼ 45¼¼ ÀÌ»ó ³²¼ºÀÌ ºñŸ¹ÎC, ºñŸ¹ÎE, ¾Æ¿¬, ¿±»ê µî Ç×»êȹ°ÁúÀ» ¸¹ÀÌ ¼·ÃëÇϸé Á¤ÀÚÀÇ ÁúÀ» ³ôÀÏ ¼ö ÀÖ´Ù°í ¹àÇû´Ù.
¿ÍÀ̷κ¤ ¹Ú»ç´Â ´ã¹è¸¦ ÇÇ¿ìÁö ¾Ê´Â 22~80¼¼ÀÇ °Ç°ÇÑ ³²¼º 80¸íÀ» ´ë»óÀ¸·Î ½Ä½À°ü°ú ¿µ¾çº¸ÃæÁ¦ º¹¿ë ¿©ºÎ¸¦ Á¶»çÇϰí Á¤ÀÚ»ùÇÃÀ» äÃë, ºÐ¼®ÇÑ °á°ú ÀÌ °°Àº »ç½ÇÀÌ È®ÀÎµÆ´Ù°í ¸»Çß´Ù.
45¼¼ ÀÌ»óÀÇ °æ¿ì ºñŸ¹ÎC ¼·Ãë·®ÀÌ °¡Àå ¸¹Àº »ç¶÷ÀÇ Á¤ÀÚ¿¡¼ DNAºÐÀý Àý´Ü °°Àº DNA¼Õ»óÀÌ 20% ÀûÀº °ÍÀ¸·Î ³ªÅ¸³µ´Ù.
ºñŸ¹ÎE, ¾Æ¿¬, ¿±»ê ¼·Ãë·®ÀÌ ¸¹Àº »ç¶÷µµ ´Ù¸¥ »ç¶÷¿¡ ºñÇØ Á¤ÀÚÀÇ ÁúÀÌ ¿ì¼öÇÑ °ÍÀ¸·Î ³ªÅ¸³µ´Ù.
±×·¯³ª 40¼¼ ÀÌÇÏ ³²¼ºÀº ÀÌ·¯ÇÑ Æ¯Á¤ ¿µ¾ç¼Ò ¼·Ãë¿Í Á¤ÀÚÀÇ Áú »çÀÌ¿¡ ¿¬°ü¼ºÀÌ ¾ø¾ú´Ù.
ÀÌ´Â ÀþÀº »ç¶÷Àº ³ªÀ̸¦ ¸ÔÀº »ç¶÷¿¡ ºñÇØ ºñ±³Àû »êȽºÆ®·¹½º°¡ Àû°Å³ª ½ºÆ®·¹½º¸¦ È¿°úÀûÀ¸·Î À̰ܳ»±â ¶§¹®ÀÏ ¼ö ÀÖ´Ù°í ¿ÍÀ̷κ¤ ¹Ú»ç´Â ¼³¸íÇß´Ù.
½ºÆ®·¹½º´Â Á¤ÀÚÀÇ ÁúÀ» ¶³¾î¶ß¸± ¼ö ÀÖ´Ù.
ÀÌ ¿¬±¸°á°ú´Â 'ÀӽŰú ºÒÀÓ(Fertility and Sterility)' ÃÖ½ÅÈ£¿¡ ½Ç·È´Ù. (´º¿å ·ÎÀÌÅÍ=¿¬ÇÕ´º½º)
|