There are many benefits to regular physical activity for children. It helps with healthy growth and development and, if children are physically active, they are less likely to become overweight , or obese, adults. A recent study found that teenagers who carry a gene for obesity are less likely to become overweight or obese if they are physically active for an hour a day. If an overweight child becomes an overweight or obese adult, they are more likely to develop health problems. Such problems include diabetes, stroke, heart disease and cancer.
When an RH negative mother carrying an RH positive fetus delivers her child, either through birth or abortion, the mother may become sensitized to RH antigens. The fetus’ RH antigens enter the mothers’ blood stream, stimulating her to develop anti-RH antigens. In future pregnancies with RH positive fetus’ these may cross back through the placenta and cause clumping of the fetus’s red blood cells, causing nerve and brain damage. Sensitization can also cause serious consequences with clumping of blood if the woman is ever transfused with RH positive blood.