Good news for pregnant coffee-lovers: the American College of Obstetricians and Gynecologists now say that moderate caffeine intake — less than 200 milligrams a day — won't increase chances of miscarriage or preterm birth:

"In general, 200 milligrams of caffeine is equal to one 12-ounce cup of coffee, but coffee drinkers should be aware that there can be tremendous discrepancies in different brews. For example, a grande 16-ounce Starbucks brewed coffee has 320 milligrams of caffeine.

"Eight ounces of caffeinated tea and most 12-ounce soft drinks have less than 50 milligrams of caffeine; 1.55-ounce chocolate bars have less than 35 milligrams, according to information cited in the new report."

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Most adults need at least five hours of sleep to function properly, but a study of parents found many moms and dads miss out on as much as six months worth of sleep in the first two years of their child's life:

"But almost two thirds (64 percent) of parents with babies and under-twos get just three-and three-quarters hours, according to a study for Silentnight beds. That's just 75 percent of the minimum recommended length of uninterrupted sleep.

"And some very unlucky parents — 12 percent of those surveyed — get less than two-and-a-half hours of uninterrupted sleep per night."

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A revolutionary knee replacement procedure could see patients walking just two hours after surgery. It combines new anesthetic techniques with highly effective pain management. About 2,000 patients will benefit from this in the next 12 months:

"The system combines new aesthetic techniques with highly effective pain management. Anti-depressants and drugs traditionally used to treat fits are being employed, as medics have discovered they can act as pain killers.

"The new techniques can also be used for hip and ankle treatments."

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