Zinc
 |
Zinc
is a
trace mineral that plays many essential functions and is
found in almost every cell of our body. Over 300 enzymes
depend
on this mineral for them to work properly. Discover the health benefits
of this mineral.
|
 |

This
essential mineral plays such an important role in so many functions in
our body that you can't afford to be deficient in this. Take at least
the U.S. Recommended Dietary Allowance (RDA) amount or eat foods high in zinc.
Most
multi-vitamins include enough of this mineral but topping up with
a separate supplement may be a good idea for some people. There is very
little risk in
taking double or triple of the RDA amount.
Table
of Contents
 |
The Common Cold Treatment / Sore
Throat
Zinc gluconate lozenges are shown to shorten the duration of the
cold symptoms in several clinical studies as well as helping with sore throat.
|
 |
Acne
Studies
show that low levels of this essential mineral can make the acne
condition worst. Clinical studies support using zinc to help
clear up acne problems.
|
 |
Herpes
Infection / Genital Herpes
Using
zinc cream seems to lessen the severity and shorten the duration of
genital herpes infection. The results seem to be better when this
mineral is combined with a cream containing lysine.
|
 |
Age-Related
Macular Degeneration (AMD)
Population studies seem to show that taking this mineral can lower the
risk of getting AMD.
Also,
clinical studies show that taking this mineral along with vitamin C (500
mg), beta-carotene (15 mg) and vitamin E (400 IU) reduces the risk of
vision loss and slows down the disease.
However, not all studies reported this benefit.
|
 |
Immune
System Enhancement
This
mineral is able to boost the immune system. It does this by pushing the
thymus gland to work better in making hormones that boost the
production of white blood cells.
|
 |
Enlarged Prostate
(Benign Prostatic Hyperplasia / BPH)
This
mineral plays an important role in keeping the prostate gland healthy.
Some preliminary studies suggest that taking zinc helps to reduce the
symptoms of BPH.
|
 |
Attention
Deficit-Hyperactivity Disorder (ADHD)
Combining this mineral with standard prescription drugs seems to help
reduce the symptoms
of ADHD. Some researchers found that children suffering from ADHD had a
lower blood level of zinc.
Experts suggest that it may be more
effective in children who were initially low in this mineral, that have
a high body mass index (BMI) or who are low in essential fatty acids
levels.
|
 |
Gingivitis
Many
studies done show that using a mouthwash or toothpaste that contain
this essential mineral can prevent gingivitis and stop plaque from
forming on the teeth.
|
 |
Wound
healing (in burn patients)
A small study done in children showed that taking this mineral along
with vitamin C and vitamin E
helps wounds to heal faster.
|
 |
Rheumatoid
Arthritis (RA)
Some small studies seem to show that this mineral can modestly give
pain relief to those suffering from RA.
The
researchers suspect that those with deficiency in this mineral might
benefit more than those people who have normal levels of zinc.
|
 |
Alzheimer's
Disease (AD)
Some
studies suggest that higher levels of this mineral might slow down the
progression of AD. Unfortunately, other studies seem to suggest that
higher levels of this mineral
may also worsen AD.
Note:
Until more research is done, avoid taking excessive amount and keep the
dosage at the levels recommended by experts.
|
 |
Prostate Cancer
Lab studies show that this mineral can slow down the growth of prostate
cancer cells.
|
| Helpful |
Infertility
in Men
Several
clinical studies seems to show that taking this essential mineral
helped to
increase and improve the quality of the sperm but other didn't show any
effect. Experts believe that the cause of infertility might explain the
differences seen in different research studies.
|
| Helpful |
Aphrodisiac / Enhancing
Libido
Studies show that zinc deficiency reduces blood levels of testosterone,
thus possibly lower libido.
|
| Helpful | Yeast Infections
One
small study showed that taking this mineral can help in fighting off
yeast infections. However, another study was not able to verify this benefit.
|
| Helpful |
Hair
Loss
Some small
studies done to see if taking this essential mineral helped with hair
loss generated
conflicting results. Some studies show it helped and other showed it
did not.
|
|
Tinnitus
(Ringing in the Ear) - Probably Not Effective
Some
experts suggest that low levels of this mineral may cause tinnitus in
some people. The cochlea (nerve endings in the inner ear used for
hearing) is high in zinc.
However, clinical studies conducted don't seem to support this claim.
|
|
Eczema
(Atopic dermatitis) - Probably
Not Effective
There
seems to be no difference in blood levels of this mineral in those
people with or without eczema. Studies with subjects taking this
mineral didn't show any improvement in their eczema condition.
|
|
Psoriasis
- Probably Not Effective
Several studies show that taking this mineral as a supplement had no
effect on psoriasis.
|
|
Prevention of the Common Cold
- Probably Not Effective
Studies done showed that the zinc lozenges are unable to
prevent you from catching the cold virus.
|
Suggested
Benefits and Traditional Uses
- Acne
- Age-related macular degeneration (AMD)
- Alzheimer's disease (AD)
- Anorexia nervosa
- Asthma
- Attention deficit-hyperactivity disorder (ADHD)
- Cataracts
- Crohn's disease
- Common
cold prevention and treatment
- Dementia
/ Memory enhancement
- Diabetes
- Eczema (atopic dermatitis)
- Enlarged
prostate (Benign prostatic hyperplasia / BPH)
- Hair loss (alopecia)
- High
blood pressure (hypertension)
- Genital herpes
- Immune system enhancement
- Impotence
- Infertility (male)
- Malaria prevention and treatment
- Night blindness
- Peptic ulcers
- Psoriasis
- Prostate
cancer
- Osteoporosis
- Rheumatoid arthritis (RA)
- Swine flu (influenza)
- Tinnitus
- Ulcerative colitis
- Wound healing
- Yeast Infections
Topically (on
the skin)
- Anti-aging effect
- Gingivitis
- Herpes infection
- Wound healing
Facts
and Frequently Asked Questions (FAQ)
What
is zinc?
This mineral
is essential to our body for
maintaining health. It is needed for enzyme functions, maintaining cell
membranes and regulating DNA function and hormones. The health benefits
of this mineral is listed be
It plays an essential role in:
- maintaining the immune system and white blood
cells
- keeping tissues in the skin healthy
- controlling the production of insulin
- controlling the growth of bones
- repairing damaged tissue (for example from
wounds and burns)
- metabolism of proteins and carbohydrates
- smell, vision and taste
How do I know if I have a deficiency in zinc?
Severe
deficiency in this mineral is
rare except in developing countries where their diet is very poor.
Signs and symptoms of severe deficiency include:
- immune system malfunction
- increased risk of infection
- poor wound healing
- night blindness
- behaviour problems
- severe diarrhea
- growth problems (absence of growth)
- problem with taste
- lack of appetite
Mild to moderate deficiency may not cause severe
symptoms listed above
but may be responsible for causing a wide variety of diseases,
especially
in children.
What are some food sources that contain high
amounts of zinc?
For a listing
of common foods with a rich source of zinc, click here. Most
multi-vitamin supplements contain at least the US RDA amount of zinc.
Side
Effects, Toxicity
and Warnings
What are some side effects of taking zinc?
The common
side effects of taking this
trace mineral include nausea, vomiting and a metallic taste in the
mouth. However, doses within the U.S. RDA guidelines will rarely cause
any side effects.
What is some toxicity if I take too much or
overdose
on zinc? Can you take too much?
Reported side
effects when taking this trace mineral
in doses above the tolerable upper intake level (UL) include fever,
cough, nausea, vomiting, diarrhea, restlessness and drowsiness.
Taking
between 150 to 450 mg of this mineral on a daily basis is known to
cause
deficiency in copper, suppress the immune system and lower the "good"
(HDL) cholesterol levels in the blood,
It is possible that you can take too much of this mineral in your diet,
if for example, you eat oysters daily. Click here to see a
listing of foods that contains this trace mineral.
There is some concern that taking over 40 mg of zinc on a daily basis
may cause a deficiency in copper in your
body. Some experts suggest adding copper to avoid this concern. (Most
multi-vitamins do contain trace amount of copper and that should be
sufficient.)
What about taking zinc during pregnancy? What's
the safety of this mineral?
Avoid
taking excess
dose unless supervised by a healthcare professional. Over 80% of
pregnant women around the world is suspected to be deficient in this
mineral. Deficiency during pregnancy is suspected to contribute (in
part) to premature babies, complications in labor and low birth weight.
Dosage
&
How
to Take It
The U.S. Recommended Dietary Allowance (RDA) is listed below for the
different age ranges and gender.
| Population Group |
RDA (daily amounts) |
| Infant (birth to 6 months) |
2 mg |
| Child (7 months to 3 years) |
3 mg |
| Child (4 to 8 years) |
5 mg |
| Child (9 to 13 years) |
8 mg |
| Teenager (14 to 18 years) |
11 mg ( and 9 mg for female) |
| Men (19 years and older) |
11 mg |
| Women |
8 mg |
| Women (pregnant) |
13 mg |
| Women (breastfeeding) |
14 mg |
| Tolerable
upper intake level (UL) |
40
mg |
Note: As
this is a trace
mineral, your body only needs a very small amount to
completely avoid deficiency.
Doses
Suggested for Various Health Problems
The
Common Cold - Allow one zinc gluconate lozenge
(13 to 23 mg or more) in the mouth slowly. Use one lozenge every 2
hours for one to two weeks.
Acne Conditions - Clinical studies used 30 to 135 mg
daily.
Age-related Macular Degeneration (AMD) - Take 80 mg along
with vitamin C (500
mg), vitamin E (400
IU) and beta-carotene 15 mg daily.
Enlarged
Prostate and Prostate
Cancer -
Experts suggest taking 15 to 30 mg daily.
Attention
Deficit-Hyperactivity Disorder (ADHD) - Dosages from 15 mg
to 40 mg of zinc daily were used in clinical studies.
Note:
Take about 3 mg of copper with dosage of zinc above the RDA amount. It
is known that high doses of this trace mineral may cause copper
deficiency in the
body. Find out if the multi-vitamin you take has the needed amount of
zinc. Most will have enough.
References
Selected
References for Zinc + US RDA of Minerals Printouts
Revised: January 28, 2010

Use the search box below to
quickly find what you are looking for!
|