Offline Database
Healthdata was also available as a disc based offline database, also in the viewdata format. It seems as if it was mostly a copy of the online content, so we present it here for your delight and access..
Do note that this information is at least 20 years old. Please do not rely on anything in here as current medical advice; for that please visit
the NHS website.
Nitrates
Farmers use nitrogen fertilisers to
maximise the yield from their land. The
nitrates get washed out of the land and
end up in rivers and lakes.
The extra nitrate causes overgrowth
of small green organisms called algae.
These can become so abundant that they
stop light penetrating into the water
preventing the growth of other plants.
Nitrates also get into drinking
water. In some areas, particularly at
times of drought, the concentration of
nitrate in water can be high enough to
be hazardous to health. Babies are
particularly at risk.
Phosphates - key 1
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