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Your heart beats over 36 million times a year.
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.
All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.
There are approximately 3 million unintended pregnancies in the United States each year.
Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.
![Lymphatic vessels (green) pick up excess tissue fluid, purify it in lymph nodes, and return it to th](https://biology-forums.com/gallery/47/medium_14755_10_09_12_7_17_45_85032206.jpeg)
![The basalt below the hominins is dated to 1.8 million years ago, and the geomagnetic polarity of the](https://biology-forums.com/gallery/47/medium_274477_04_02_15_12_26_15_20589385.jpeg)