Weight is a good guideline for blood volume in people of average build. This is why we set a minimum weight limit of 7st 12lbs (50 kg) because if more than 13% of blood volume is taken there is more risk of the donor feeling faint after donating.
Not surprisingly, the one factlet most often offered up as revealed truth is wholly false: Your hair and nails do not continue to grow after you die; it's all optical illusion. The sorry fact of the matter is that we dehydrate after dying. Our flesh dries and, in so doing, pulls away from nails and hair.
Eventually, your hair usually goes back to the way it used to be after the effect of chemotherapy on the hair follicle wears off. If you lost your hair after whole brain radiation for brain metastases, it may take four to six months before even an inch of growth appears.ow long it takes to grow back a full head of hair (and pubic hair, lashes, and brows if you lost them too) varies from person to person. Generally, the hair most likely to fall out is the hair that tends to grow back the fastest. The hair on the top of your head grows faster than your eyebrows or eyelashes.