The researcher that Ni Yazhou of guest evening standard establishs university college of medicine is in the United States " bear with infecund " research is published to report on monthly magazine, the healthy man that says they are opposite 87 19 years old to come 48 years old undertook investigating, discover fat meeting makes hormone level of the male produces change, bring about fecundity to drop.

This Eric Baoli that studies a group says, compare with thinner male photograph, level of the testosterone in fat man blood is inferior, hormone of hurried corpus luteum and hurried are follicular hormone is lower also, hind two kinds of hormone are very important to fecundity.

Protect benefit to say, this one result makes clear, fat it is to bring about barren an element.

Study the group discovers, in 87 men that accept investigation, already had the child occupy 68 ％ . Their average weight index is 28, belong to overweight; And index of average without the child's male weight is 32, belong to fat.

Researcher butt joint suffers the discovery after the reproductive hormone that investigates the male undertakes detecting, fat rate is higher, hormone of hurried corpus luteum and hurried are follicular hormone level is lower, and estrogen level is higher.

Researcher explanation says, excessive and fat perhaps can make testosterone be changed into estrogen, this kind of change of hormone can issue signal to cerebrum again, restrain hormone of hurried corpus luteum and urge of follicular hormone generate.

Researcher points out, the research in the past makes clear, fat meeting brings about sexual desire to drop and increase happen erect the possibility of the obstacle. These influences are mixed change perhaps meets a hormone of institute discovery joint action, weaken the fecundity of fat man.