Understanding the importance of Zinc, and the symptoms of its deficiency.
By: Dr. Sonam Bhatia, PhD
There is no
doubt that every disease and ailment can be attributed to a mineral deficiency
in the human body. Still, it is possible to achieve good health, glowing skin,
and high immunity by eating zinc-rich foods.
What is Zinc Deficiency?
Zinc deficiency means that the body does not have
enough Zinc stored in the body. Zinc is considered an essential nutrient necessary
for proper immune function, wound healing, growth, and development during
pregnancy, childhood and adolescence (1-2).
Summary: Improper levels of zinc
in the body can cause a deficiency or an abundance of the mineral, both of
which are harmful. Zinc is important for immune function and overall growth and
development of the human body.
What does Zinc do for you?
Zinc is one of your body's most abundant trace
minerals, second only to Iron, and is found in every cell. Zinc is required by
over 300 enzymes, including those involved in metabolism, digestion, nerve
function, and more. Therefore, this mineral is essential for the health of the
skin, DNA, and protein synthesis. It also contributes to your sensory
perception. Zinc deficiency can lead to an impaired ability to taste or smell
(3).
Summary: Zinc plays a vital role
in overall growth, metabolism, and sexual development, and its deficiency can
cause a variety of physical ailments.
What are the symptoms of Zinc Deficiency?
The symptoms of zinc deficiency include growth
retardation, loss of appetite, and impaired immunity in addition to the below
mentioned possibilities:
· Hair-Loss
· Diarrhoea
· Delayed Sexual Maturation
· Impotence
· Hypogonadism in Males
· Skin & Eye Lesions
· Cracked Skin
Children with low levels of zinc can experience
delayed growth and development and delayed sexual maturation (4).
Summary: Deficiency in zinc can
cause impaired growth, reduced appetite, and cracked skin along with several
other health troubles.
What are the causes of Zinc Deficiency?
In general, zinc is not consumed by everyone in
sufficient amounts to meet their daily dietary needs. The Recommended Dietary
Allowance (RDA) for adults over the age of 19 years is 11 mg a day for men and
8 mg a day for women. During pregnancy and breastfeeding, however, a woman's
daily zinc intake needs to be slightly higher, at 11 mg - 12 mg a day. Zinc
deficiency may occur when its intake falls below these suggested levels.
Zinc is best absorbed by the body when it is
combined with protein, so vegetarians, vegans, and people with long-term
restrictive diets may be more vulnerable to the toxicity of zinc. Further,
people on restricted diets or exclusively breastfed babies over six months of
age may also suffer from zinc deficiency. Certain medications (e.g., calcium
hydroxide, magnesium hydroxide, aluminium hydroxide etc) lead to a loss of zinc
from urine and thus causes a deficiency. A new-born baby may suffer from zinc
deficiency if he or she is born prematurely, very ill, or if the mother had a
moderate zinc deficiency. A few studies have also shown that zinc deficiency
can be caused by genetic factors (5).
Summary: People on restricted
diets, vegetarians, and individuals consuming alkaline drugs are more
susceptible to a zinc deficiency. Certain gene disorders can also lead to a zinc
deficiency in humans.
Tips for preventing Zinc deficiency
Zinc can be consumed at a higher level by preparing
and eating foods rich in zinc. Individuals can consume oysters, meat, and fish
in their diet that are known to be rich in zinc. On the contrary, zinc is found
in small amounts in cereals, legumes, dairy products, and seeds. Additionally,
if your diet is inadequate in zinc, a supplement may be necessary in order to
reach the minimum daily intake.
Summary: Zinc is found in
oysters, meat, and poultry. Whole grains and milk products also contain zinc.
Conclusion
Zinc is necessary to maintain overall health, growth, and synthesis of DNA. It can reduce inflammation and age-related ailments. In men, the RDA for zinc is 11 mg, and in women, it is 8 mg. Zinc supplements are crucial for the health of older people and those suffering from diseases that prevent zinc absorption.
Reference:
1. Zinc
- Health Professional Fact Sheet (nih.gov)
2. Hambidge, M., 2000. Human zinc deficiency. The Journal of nutrition,
130(5), pp.1344S-1349S.
3. Caulfield, L.E. and Black, R.E., 2004. Zinc deficiency. Comparative
quantification of health risks: global and regional burden of disease
attributable to selected major risk factors, 1, pp.257-280.
4. Classen, H.G., Gröber, U., Löw, D., Schmidt, J. and Stracke, H., 2011.
Zinc deficiency. Symptoms, causes, diagnosis and therapy. Medizinische
Monatsschrift fur Pharmazeuten, 34(3), pp.87-95.
5. Prasad AS. Zinc: an overview.
Nutrition. 1995 Jan-Feb;11(1 Suppl):93-9. PMID: 7749260.
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