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A [study / sturdy] from Stanford University in the USA reports that babies of older fathers may be more [liked / likely] to have health problems. Scientists [studied / studying] data on 40,529,905 births in the USA between 2007 and 2016 to [ascertain / retain] whether a father's age [adversely / adverse] affects his child's health. Researchers discovered that compared to babies born to fathers in the 25-to-34 age [bucket / bracket] , babies born to fathers over the age of 45 were at greater risk of being [birth / born] with health problems. These included being born [maturing / prematurely] , having a low birth weight or being admitted to a neonatal [intense / intensive] care unit. The researchers added that babies born to older fathers were generally not as healthy as those [conceived / contracted] by younger fathers.

One scientist said a lot more [detail / detailed] research was needed to prove that older fathers conceive less-healthy babies. Dr Michael Eisenberg from the Stanford University School of Medicine said: "I think it's [important / importantly] to understand that the risks we are seeing are [modern / modest] . So for an individual, the [risk / risky] may not change much." He added that his team's data could show a [blend / trend] that health departments in governments might want to be [aware / beware] of. He said: "At a population level, there may be public health [implies / implications] of men...waiting longer to conceive." Dr Eisenberg concluded that: "While the oldest father [even / ever] is 96, this research [suggests / suggestion] that the risk to child and mother may increase if fathers conceive [lately / later] ."