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Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.
Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.
Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).
Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.
Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.
![The underside of a male (top) and a female (bottom) individual of Pachygrapsus marmoratus, showing t](https://biology-forums.com/gallery/47/medium_27599_22_04_12_7_25_59.png)
![The ovaries. In addition to producing ova, the ovaries secrete the female sex hormones, estrogen and](https://biology-forums.com/gallery/47/medium_14755_28_08_12_1_42_24_8232364.jpeg)
![(A) The male pelvis (android) is shaped like a funnel, forming a narrower outlet than the female. (B](https://biology-forums.com/gallery/47/medium_14755_24_09_12_7_41_29_89611962.jpeg)