Apologies for the delay, busy building an "aquaponics" garden and had trouble with power.

So what follows will be considered contraversial by some medical authorities bu then the authorities who set our RDA/Is have vested interests in keeping you below par healthwise.They profess to maintain "health care" whereas in truth they maintain "sick care".

Hereunder is what one knows from 27 years or more experience to be factual when it comes to calcium metabolism and cancer of epethelial tissue, i.e. skin, breast and intestinal. For more on calcium and calcium supplements see:http://health-care-aus.org and under contents "osteoporosis".

Cedric F. Garland, Dr.P.H., cancer prevention specialist at the Moores Cancer Center at the University of California, San Diego (UCSD) and colleagues estimate that 250,000 cases of colorectal cancer and 350,000 cases of breast cancer could be prevented worldwide by increasing intake of vitamin D3, particularly in countries north of the equator. Vitamin D3 is available through diet, supplements and exposure of the skin to sunlight.

In the latest study, scientists at the Moores Cancer Centre at the University of California, San Diego, estimate that 250,000 cases of colorectal cancer and 350,000 cases of breast cancer could be prevented worldwide by increasing the intake of vitamin D3.

In the UK, such a strategy would reduce cancer cases by 30,000 a year.

The study combined data from surveys of blood levels of vitamin D during winter from 15 countries, along with satellite measurements of sunshine and cloud cover.

The data was then applied to 177 countries to estimate the average blood level of vitamin D among inhabitants, says a report in the journal Nutrition Reviews.

The study showed lower levels of vitamin D are linked to higher levels of breast and colon cancers.

Researchers say increasing vitamin D levels has the potential to help prevent cancer.

Dr Cedric Garland, the cancer prevention specialist who led the study, said: "This could be best achieved with a combination of diet, supplements and short intervals - ten or 15 minutes a day - in the sun."

The study says an intake of 50 microgrammes a day of vitamin D3 would lead to a 'meaningful reduction' in the two cancers.

Vitamin D supplements are available in two forms - vitamin D2 and vitamin D3. (D3 is the best form Ed.)

The mechanism by which vitamin D works is only partly understood, but it slows the rate of cancer cells' growth.

It is made when the body is exposed to the sun's UVB rays.

These only reach northern countries in summer months because the angle of the sun means they are mostly absorbed in the atmopshere.

The best chance of producing vitamin D is on sunny, summer days because less is made in cloudy conditions.

But Dr Garland said those with a history of skin cancer or a light sensitivity disease such as lupus should avoid sun exposure.

Clothing and a hat should be used when in the sun for longer than 15 minutes.

End.

Dr. Cedric Garland and his brother Dr.Frank proved many years back that calcium plays a major role in breast cancer and that eating whole wheat among other grains etc may contribute to calcium deficiency. More to follow: