The reproductive system of both males and females are specialized in function and that they only work with the specific gender they are given to. While the female reproductive system is more complex as it houses the environment a fertilized egg will grow into, the male reproductive system is in no way a simple one as well. Perhaps, the most visible difference of the male reproductive system to that of the females is that the male have an external protruding structure. This external structure is situated outside of the body and consists of the penis, the testicles, and the scrotum. Read more…
The world's biggest health study will shortly wind up recruiting, having today passed the 500,000 subject mark – persuading one in fifty Britons aged 40-69 to let researchers follow their health for the next 30 years.
The £66 million , backed by all the major institutions of British medical research, will "generate new knowledge about relationships between health, disease, genes and environment for many years to come", according to Sir Mark Walport, Director of the Wellcome Trust.
The study aims to be as deep as it is wide, with patients followed in considerable detail. Each has provided samples of blood, urine and saliva, and answered questionnaires on diet, exercise, family and personal history. Each has undergone a battery of tests including lung function, arterial stiffness, bone mineral density, grip strength, brain function, intraocular pressure, sight and hearing.
Much of the analysis won't be happening for at least a decade. But after that, organizers expect a steady stream of revelations in everything from cancer to heart disease to diabetes and arthritis. Needless to say, with their similar genetic heritage, many Canadians can expect Biobank will generate findings relevant to their lives. The study's ethical code dictates sharing anonymized data with all credible foreign researchers.
A key function of Biobank is to act as a gene database. As the NHS's reporting system picks up subjects' health woes, their samples will be analyzed to look for genetic correlations. But participants have been told they won't be getting any genetic analysis back. In fact, they don't stand to gain personally in any way. One striking feature of the study is that even if it detects evidence of illness in participants, whether through blood or urine samples, or because they have genes that turn out to be high-risk, Biobank won't inform the affected patients or their physicians.
One reason for this, the organizers say, is to stop insurance companies from penalising study volunteers. Insurance contracts often legally require purchasers to disclose test results they know, but not those they don't.
But a major ultimate goal of the Biobank is to find the links between DNA and diseases, and disseminate that knowledge as widely as possible. One suspects that at some point, the insurance companies are going to get involved in that process.
This morning, as they celebrated the recruiting of the half-millionth Biobank recruit, the great and the good of British medical research were effusive in their praise of these “local heroes” who will give so much of their time over the next 30 years for no obvious personal benefit. But hang on a minute – if they're all altruistic heroes, then how can they be a representative sample of the British population?
Posted by David Elkins and others at 3:54 PM