04.05.07
Weekly Science Wrapup
This article talks about how breast-feeding alone cuts HIV risk (assuming the mother can’t get canned food).
The research, funded by the UK’s Wellcome Trust, found that there was a 4% risk of postnatal transmission to infants who were just fed on breast milk between the age of six weeks and six months.
Infants who received formula milk or animal milk in addition to breast milk were nearly twice as likely to be infected as infants who received breast milk only.
And those given solids in addition to breast milk were almost 11 times more likely to acquire infection.
It is thought that this higher risk is due to the larger, more complex proteins found in solid foods which may lead to greater damage to the lining of the stomach, allowing the virus to pass through the gut wall.
and this article talks about how the hormone THP, which usually has a tranqulizing effect, causes anxiety during puberty.
They found that the target for the hormone, a specific receptor, is more prevalent in the part of the brain which regulates emotion during puberty.
This appears to reverse the normal calming effect.
and this article that talks generally about fitness, emotional well-being and aging.
From your body’s point of view, “normal†aging isn’t normal at all. It’s a choice you make by the way you live your life. The other choice is to tell your cells to grow—to build a strong, vibrant body and mind.