Aim
for healthy nutrition
Consultant Dietician Sigrid
Samuelsen de Silva answers your questions on diet and nutrition
Q:Are foods containing Mono Sodium
Glutamate (MSG) injurious to our health? Some say that MSG promotes
the production of cancer cells in the body. The use of MSG in
food products is prohibited in some countries.
Monosodium glutamate is used as a food additive and was, in fact,the
first commercially used flavour enhancer. It can be described
as the fifth basic taste, because its flavour is somewhat different
to the other four known tastes: sweet, sour, bitter and salty.
MSG is used to intensify the natural flavour of certain foods.
It is naturally found in seaweed, tomatoes and Parmesan cheese.
MSG may produce hypersensitive reactions and allergies in some,
especially children, which may lead to rashes, headaches, respiratory
disorders, such as wheezing, gastritis and depression. There seem
to be strong links between the frequent and/or high intake of
MSG enhanced foods and hyperactivity in children. I have not heard
of evidence or research suggesting that it may promote the production
of cancer cells.
But bearing the aforementioned in mind, it would be advisable
to reduce the intake of MSG containing foods. I am not certain
whether MSG needs a special declaration on Sri Lankan food labels,
and/or whether it may be just falling into the 'spices' or flavour
enhancer general declaration. If that is the case, it may be difficult
to identify products with MSG. It may even be possible that all
processed foods contain MSG, since it would enhance the flavour
and taste of the product.
But many food-processing companies abroad declare if their product
is MSG free or contains MSG.
Q: I am 15 and thin compared to other girls of my age.
I would like to get fatter. I try to eat a lot, but I can't. Is
there any medicine to become fat? What should I do to gain weight?
At your age you may be still growing and therefore you may look
thin while growing taller. You can only comment on the thinness
of your body once you have reached growth maturity. As much as
you yearn to become fat others may want to be thin. As I have
said in earlier answers to queries, don't compare your body with
others, especially at your age where a lot of changes are taking
place in your body.
There is no medicine 'to become fat'. Don't try to be fat, but
aim for good healthy nutrition. Have a healthy breakfast before
school. Take a good-sized interval snack while at school, because
students' lunch is usually very late. If your school has got a
close to midday interval, you might consider taking a rice and
curry lunch at that time. If time permits take another small snack
and drink for late afternoon. Dinner can be followed by dessert.
Early in the morning and before going to sleep a hot milk drink
(chocolate or other preferred flavour) could be beneficial.
Q: Please recommend a suitable diet for me. I am 70 years
(female) and a vegetarian, weighing 60 kilos.
The facts you give about yourself are too few to recommend
a detailed diet. Since I do not know your height, you may or may
not be of average weight. I assume that you do not suffer from
any health problems. In general it can be said that healthy nutrition
in older people is only slightly different from a younger person's
requirements.
One important aspect is, that as we get older we need fewer and
fewer calories on a daily basis, since our metabolism slows down
with age, due to slower cell renewal, metabolism and generally
slightly less active life, due to various circumstances.
It can be said that on average we need 200 calories less per day
with every decade, we live after the age of 30. That means that
if the average female needs 2400 calories in her twenties, she
should consume about 2200 calories in her thirties, 2000 calories
in her forties and so on. By the time a person is 80 plus, the
energy requirement is very little, provided that the person is
healthy and the digestive tract is functioning and digesting well.
That's why a lot of people start putting on weight after the age
of 30 or 40, for no-one seems to eat less, but rather more.
However this weight gain maybe reversed in older age with health
and bodily functions declining. Older people should eat smaller
meals more often to avoid unnecessary stress on the digestive
tract.
Sleep may be disturbed if meals are taken late, shortly before
going to bed. Since you are a vegetarian, you must pay attention
to your protein and folate intake. Calcium intake also needs to
be adequate. If you are a lacto-vegetarian, you can get high quality
protein and calcium through milk and milk products.
If you are a vegan, you should eat dhal, gram and other pulses,
in combination with leafy vegetables, dark green leaves and root
vegetables.Since you are a vegetarian you may consider a low dosage
multi-vitamin and mineral supplement, including calcium.
Send in your questions on diet and nutrition to:
Ask the Dietician
C/o MediScene
The Sunday Times
P.O. Box 1136,
Colombo