http://www.scientificamerican.com/article.cfm?id=ask-the-experts-why-are-o
An evolutionary expert explains why
sapiens is not equipped to handle eight kids, and why they invest so much energy in a single offspring (clipped)
So we are not built to have octuplets?
Humans are ill equipped to handle large litters. Evolution has simply not set us up to do that well. Typically, litter size in nature is matched by the number of mammary glands we have. We have two. How do you nurse the additional offspring?
Michael Kamrava, implanted more than that, violating professional ethical guidelines, although not breaking any U.S. laws. Kamrava, a general practitioner who lacks board certification* for obstetrics and gynecology, has one of the worst records for successful in vitro implantations in the country, according to Forbes.
Of those implantations only 5 resulted in pregnancies (8%). And of those five pregnancies, only two were carried to term, one singleton and one set of twins. One can infer that the twins were the ones that Octuplet Mom gave birth to that year. Suleman was Kamrava's most famous patient, even before the octuplets. (See this local news clip of her and Kamrava from 2006 when she was expecting the twins.)
Suleman's babies ranged in weight from 1.5 to three pounds (0.7 to 1.4 kilograms), and low-birth weight correlates with lower intelligence and a higher risk of developing type 2 diabetes, according to BBC reports. Premature infants, common in multiple births, face a greater risk of breathing problems, brain and organ damage and, later in life, developmental problems and cerebral palsy.
raying: 
