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Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.