How HRT can keep men's bone young - and stop mood swings  Twice
a year, Bernard Collen has a pellet implanted under his skin,
and for the next six months it secretes testosterone designed to
keep his bones healthy, his memory sharp and calm his
irritability and mood swings.  Bernard, a 55-year old business
analyst, is one of a growing number of men in Britain who are on
male hormone replacement therapy.  Research increasingly shows
that testosterone replacement therapy, or TRT, can protect men's
bones from osteoporosis just as the female hormone oestrogen in
HRT offers some protection from the bone-thinning disease for
women.  TRT is also being used to help ease other symptoms of
ageing, including tiredness, irritability and the effects of
stress. There are suggestions that it may have a protective
effect against heart disease and dementia, too.  Although
osteoporosis has long been seen as a degenerative condition that
affects only women - as a consequence of hormonal changes
triggered by the menopause - new