20 MAR 2018 by ideonexus
Human Pregnancy is Adversarial Between Mother and Fetus
Inside the uterus we have a thick layer of endometrial tissue, which contains only tiny blood vessels. The endometrium seals off our main blood supply from the newly implanted embryo. The growing placenta literally burrows through this layer, rips into arterial walls and re-wires them to channel blood straight to the hungry embryo. It delves deep into the surrounding tissues, razes them and pumps the arteries full of hormones so they expand into the space created. It paralyzes these arteries ...Folksonomies: human evolution pregnancy
Folksonomies: human evolution pregnancy
09 AUG 2014 by ideonexus
Invasive Blood-Seeking Fetuses in Mammals
In most mammals, the mother’s blood supply remains safely isolated from the foetus. It passes its nutrients to the foetus through a filter, which the mother controls. The mother is a despot: she provides only what she chooses, which makes her largely invulnerable to paternal manipulation during pregnancy. In primates and mice, it’s a different story. Cells from the invading placenta digest their way through the endometrial surface, puncturing the mother’s arteries, swarming inside and ...26 OCT 2011 by ideonexus
Seven Steps to Achieve a 90% Chance of Living to 90 or 100
1. GET ACTIVE: Inactivity can shave almost four years off a person's expected lifespan. People who are physically inactive are twice as likely to be at risk for heart disease or stroke. 2. KNOW AND CONTROL CHOLESTEROL LEVELS: Almost 40 per cent of Canadian adults have high blood cholesterol, which can lead to the build up of fatty deposits in your arteries − increasing your risk for heart disease and stroke. 3. FOLLOW A HEALTHY DIET: Healthy eating is one of the most important things...If people adhere to these seven habits, they dramatically increase the number of years they can live.