Arctic giant: a polar bear and her cub stand on a frozen beach in Barrow, Alaska. With global warming shrinking their habitat, the US Government has agreed to study whether polar bears should be added to the nation's endangered species list.
FEMALE of any species when it comes to mammals have it doubly tough. They have to maintain their own health and body weight while carrying their young and /or lactating the current generation of dependants. Females drop body weight but hormones that support ovulation and lactation are supported by 'lipids.'
When the female of any species including humans don't carry enough body fat they literally don't ovulation anymore.
There is a human condition female athletes suffer from called "Triad." Women's Triad can literally eliminate female secondary sex characteristics. Which brings up a subject not relating to Polar Bears, but, explains all to clearly the recent attack on Low Fat diets by a fundamentalist administration without sound scientific principles.
But, back to the bears. They need our loyalty and they need their "Homeland Secured" as well. As with many aspects of Earth's balance our icefields and ice oceans are vital.
