This is early days on the path of frankincense as a cure for anything, yet the described biological activity is certainly suggestive and will certainly bear tracking. Somehow it encourages cancerous cells to revert back to proper function. That this is possible at all surely tells us that our underlying theories are quite incorrect.
Besides this plant is one of our ancient husbandry products and one must ask why fragrance was that important 7000 years ago. As a known medical product of great efficiency it would however be in immediate demand. The question is how it might be used in the form it historically was sold in.
I would like to see some old fashioned empirical work done on these resins with the obligatory test rats to discover the level of effectiveness if any.
Frankincense: Could it be a cure for cancer?
The gift given by the wise men to the baby Jesus probably came across the deserts from
. The BBC's Jeremy Howell visits the country to ask whether a commodity that was once worth its weight in gold could be reborn as a treatment for cancer. Oman
Most of the journey is through Arabia's
Empty Quarter - hundreds of kilometres of flat, dun-coloured desert. Just when you are starting to think this is the only scenery you will ever see again, the Dhofar mountains appear in the distance.
On the other side are green valleys, with cows grazing in them. The Dhofar region catches the tail-end of
India's summer monsoons, and they make this the most verdant place on the Arabian peninsula.
Warm winters and showery summers are the perfect conditions for the Boswellia sacra tree to produce the sap called frankincense. These trees grow wild in Dhofar. A tour guide, Mohammed Al-Shahri took me to Wadi Dawkah, a valley 20 km inland from the main city of
, to see a forest of them. Salalah
"The records show that frankincense was produced here as far back as 7,000 BC," he says. He produces an army knife. He used to be a member of the Sultan's Special Forces. With a practised flick, he cuts a strip of bark from the trunk of one of the Boswellia sacra trees. Pinpricks of milky-white sap appear on the wood and, very slowly, start to ooze out.
"This is the first cut. But you don't gather this sap," he says. "It releases whatever impurities are in the wood. The farmers return after two or three weeks and make a second, and a third, cut. Then the sap comes out yellow, or bright green, or brown or even black. They take this."
Shortly afterwards, a frankincense farmer arrives in a pick-up truck. He
is white-bearded, wearing a brown thobe and the traditional Omani, paisley-patterned turban.
He is 67-year-old
Mohammed from the Gidad family. Most of the Boswellia sacra trees grow on public land, but custom dictates that each forest is given to one of the local families to farm, and Wadi Dawkah is his turf. Salem
He has an old, black, iron chisel with which he gouges out clumps of dried frankincense.
"We learnt about frankincense from our forefathers and they learnt it from theirs" he says. "The practice has been passed down through the generations. We exported the frankincense, and that's how the families in Dhofar made their livings."
And what an export trade it was. Frankincense was sent by camel train to
Egypt, and from there to Europe. It was shipped from the ancient port of Sumharan to Persia, India and . Religions adopted frankincense as a burnt offering. China
That is why, according to Matthew's Gospel in the Bible, the Wise Men brought it as a gift to the infant Jesus. Gold: for a king. Frankincense: for God. Myrrh: to embalm Jesus' body after death.
Roman Empire coveted the frankincense trade. In the first century BCE, Augustus Caesar sent 10,000 troops to invade what the Romans called Arabia Felix to find the source of frankincense and to control its production. The legions, marching from , were driven back by the heat and the aridity of the desert. They never found their Eldorado. Yemen
Oman's frankincense trade went into decline three centuries ago, when
Portugal fought Oman for dominance of the sea routes in the Indian and the . Pacific Oceans
Nowadays, hardly any Omani frankincense is exported. Partly, this is because bulk buyers, such as the Roman Catholic Church, buy cheaper Somalian varieties. Partly, it is because Omanis now produce so little.
"Years ago, 20 families farmed frankincense in this area," says
Mohammed Gidad. "But the younger generation can get well-paid jobs in the government and the oil companies, with pensions. Now, only three people still produce frankincense around here. The trade is really, really tiny!" Salem
But immunologist Mahmoud Suhail is hoping to open a new chapter in the history of frankincense.
Scientists have observed that there is some agent within frankincense which stops cancer spreading, and which induces cancerous cells to close themselves down. He is trying to find out what this is.
"Cancer starts when the DNA code within the cell's nucleus becomes corrupted," he says. "It seems frankincense has a re-set function. It can tell the cell what the right DNA code should be.
"Frankincense separates the 'brain' of the cancerous cell - the nucleus - from the 'body' - the cytoplasm, and closes down the nucleus to stop it reproducing corrupted DNA codes."
Working with frankincense could revolutionise the treatment of cancer. Currently, with chemotherapy, doctors blast the area around a tumour to kill the cancer, but that also kills healthy cells, and weakens the patient. Treatment with frankincense could eradicate the cancerous cells alone and let the others live.
The task now is to isolate the agent within frankincense which, apparently, works this wonder. Some ingredients of frankincense are allergenic, so you cannot give a patient the whole thing.
Dr Suhail (who is originally from
Iraq) has teamed up with medical scientists from the for the task. University of Oklahoma
In his laboratory in Salalah, he extracts the essential oil from locally produced frankincense. Then, he separates the oil into its constituent agents, such as Boswellic acid.
"There are 17 active agents in frankincense essential oil," says Dr Suhail. "We are using a process of elimination. We have cancer sufferers - for example, a horse in
- and we are giving them tiny doses of each agent until we find the one which works." South Africa
"Some scientists think Boswellic acid is the key ingredient. But I think this is wrong. Many other essential oils - like oil from sandalwood - contain Boswellic acid, but they don't have this effect on cancer cells. So we are starting afresh."
The trials will take months to conduct and whatever results come out of them will take longer still to be verified. But this is a blink of the eye in the history of frankincense.
Nine thousand years ago, Omanis gathered it and burnt it for its curative and cleansing properties. It could be a key to the medical science of tomorrow.
Jeremy Howell reports for Middle East Business Report on BBC World News.