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 Minerals

Most minerals are essential for the human body to function. That's why it's so important to make a point of including a variety of foods - which contain different minerals - in your diet every day.

Minerals can be divided into three groups: the macrominerals (bulk elements), microminerals (trace elements) and ultratrace elements (elements that are consumed in microgram quantities).

Interestingly enough, minerals make out about 4-5% of your body weight. More or less 50% of this weight is calcium.

Learn more about the different minerals and their food sources.

Minerals:
 
 Zinc
What it is
What it does for you
How much you need
Which foods have it?
Signs of deficiency
How much is too much?
New research
 
What is zinc?

Zinc is a mineral distributed in the body’s organs, tissues and fluids, and is crucial for the proper function of more than 70 enzymes.


What zinc does for you

Zinc has a pivotal role in the growth of children and is crucial to the development of healthy sperm and male hormones. It’s also essential for a healthy immune system and for the healing of wounds. Zinc helps to rid the body of harmful metals such as lead and cadmium. It’s vital for the release of insulin and for keeping the senses of taste, sight and smell in good working order.


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How much zinc you need

The current RDA is 15mg. Men with prostate disease or infertility problems, should take at least 30mg zinc in supplement form.


Which foods have zinc?

Seafood such as oysters and sardines, wheat germ, red meat such as liver, beef, lamb and pork, fish such as sardines, and pumpkin seeds.


Signs of zinc deficiency

Acne, eczema and rough, dry skin. Poor concentration, repeated infections, poor growth in childhood and a delayed onset of puberty. Diarrhoea, poor vision and smell, and loss of appetite..


How much zinc is too much?

The suggested upper safe limit is 50mg per day for a limited time. Too much zinc can deplete the body of iron and copper, leading to deficiencies of these minerals.


New research on zinc

Some acne sufferers have benefited from daily supplements of 200mg of zinc over limited periods. Zinc appears to enhance male reproductive health by limiting the mobility of sperm until it enters the female tract. It also benefits men with non-cancerous swelling of the prostate (Benign prostatic hyperplasia), as well as anyone with a cold and anyone on a restricted diet.



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