Munch away cancer
There was a news item in your magazine (Down To Earth, Vol 4, No 10),
which said that researchers at the
National Institute of Nutrition,
Hyderabad, have discovered that yellow
and orange coloured fruits, like carrots,
tomatoes and oranges, contain beta
carotene which, apart from fighting
blindness, is also an anti-cancer agent.
In this connection, I would like to
point out that all yellow-orange fruits
are not rich in beta carotene. While
carrots (6.5 mg/100 g) and mangoes (2
mg/100 mg) are rich sources of beta
carotene, tomatoes and oranges are
not. They contain only 0.5 mg of beta
carotene/100 g of edible portion.
On the other hand, dark leafy green
vegetables are rich in beta carotene - a
precursor to Vitamin A. Besides, beta
carotene plants also contain other
carotenoid pigments, not all of which
have Vitamin A activity. For instance,
lycopene present in tomatoes has no
Vitamin A activity.
The observation that the above
mentioned fruits and vegetables are
rich sources of beta carotene is not
new. Also, the anti -cancer activity of
beta carotene has been suggested
earlier. The researchers at the National
Institute of Nutrition have analysed
some Indian varieties of fruits and vegetables. They have also observed that
the dietary intake of fruits and vegetables by patients suffering from certain
forms of cancer, such as upper digestive
tract cancers, is lower, suggesting that
fruits and vegetables have a protective
action against cancer....
Keep it up!
I am a regular reader of your magazine.
I rather appreciate the fact that it offers
us an oppurtunity to update ourselves
on issues relating to science. Articles
like those dealing with environmental
pollution are very enlightening.
The other point that I would like to
make pertains to the magazine's cover.
I feel the cover could do without cartoons. Instead, it could feature photographs of beautiful birds, animals or
landscapes. Visuals of areas reeling
under pollution or any other topic of
scientific relevance may look good and
appropriate too. I hope future issues of
Down To Earth carry such covers.
...
Propping the courts
With the success of the Taj Mahal case,
the courts are assuming a proactive
role. Besides, with increasing awareness, more and more people will sue
and get sued on environmental as well
as occupational health issues. However,
the judiciary already seems to be crumbling before the spate of litigations
which are barraging the courts. The fact
that the issues at hand are utterly
technical just adds to the sense of despondancy.
The need of the hour is an apex,
independent, regulatory authority on
the lines of the us Environment
Protection Agency armed with sufficient legal teeth and professional backing (unlike the limping Securities
Exchange Board of India), supplemented by special appelate tribunals -
as suggested by Kamal Nath. Also, voluntary efforts such as that of the underwriters labs in the us could be a great
help in mobilising public opinion. Care
should be taken to maintain its proactive role and not allow it to degenerate
into a bureaucratic setup such as our
own moribund BIS. The almost defunct
Central Pollution Control Board (CPCB)
and state PCBs are but a drain on the
exchequer, serving only as legal extensions of a coterie of unscruplous industrialists and politicians.
...
Well-placed concerns
Your article on the Aral sea disaster
(Down To Earth, Vol 4, No 12) of
diverting the two rivers supplying water
to the cotton fields and ignoring the
environmental consequences is a warning to all of us. In this article, you have
highlighted the grave situation and the
pitiable condition of the inhabitants of
the area and also sent cautionary messages to planners contemplating on
setting up industries without concern
for their future impact.
In your editorial, you have rightly
emphasised the need for tree plantation Actually, tree plantation and
family planning are two issues that
should be given the topmost priority if
we are interested in creating a healthier
environment in the coming century.
...
Classy assumptions
May I take this oppurtunity to respond
to your section on Africa (Down To
Earth, Vol 4, No 13). 1 want to say that
if the laws of science are what determines 'world class' or universal applicability of knowledge, then the reference
to African, Asian or European science is
irrelevant.
To say that African science is not
world class' and to later refer to pockets
of excellence in 'African science and
research' is a contradiction. Please do
understand that Africa is a continent
and not a country and should be treated
so. I do believe that the article may not
have been intended to be malicious and
derogatory with respect to Africa, but it
failed to make its intentions clear.
Finally, I would like to seek your
guidance on what exactly constitutes
world class science and what criteria are
applied in delimiting regional science....
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