blood type and cancer risk

5.20.25 ~ North Carolina Botanical Garden
‘peve minaret’ bald cypress

I can’t stop thinking about something a naturopathic oncologist told my sister, who was recently diagnosed with endometrial cancer, the same kind of cancer I had. Apparently having blood group A is associated with an increased risk of cancer, and blood group O is associated with a decreased risk of cancer. Both my sister and I have type A blood.

wild quinine

Coincidentally, a few days after learning this, while going through another one of my family history boxes — I’m now on box #6 of the 14 — I found my mother’s blood type A identification card from the Dana-Farber Cancer Institute, where she was receiving treatment for metastasized breast cancer in 1990. She died when she was 59, in spite of four years of surgery, radiation and multiple chemotherapies.

goldenseal

As I was pondering the significance of now knowing her blood type, it hit me that her father, my grandfather, had prostate cancer. (I have no way of discovering what his blood type was.) With some aggressive treatments he survived his cancer and lived to the age of 95.

bigleaf magnolia

And then I started wondering about my grandfather’s parents. Locating his father’s death certificate I discovered that he died at age 75 of adenocarcinoma of the transverse colon, metastasis to liver. He had surgery in August of 1948 and died in July of 1949.

apple cactus

Finding these connections for four generations in a row is unsettling, as looking closely at genograms can often be. If I could trace it I wonder how far back the cancer line would go. All my children have type O blood so likely they will be spared from this specific cancer risk factor.

apple cactus

The gene for type A blood is dominant, and the gene for type O is recessive. Which means I have a recessive O gene that I passed on to my children. (They got their other O gene from Tim. One needs two O genes to have type O blood. Tim also has type O blood so that’s the only kind of gene he could give them.) It surprises me that none of them got the dominant A gene from me because the law of averages suggests that half of my children could have received it and had type A blood!

bulltongue arrowhead

Until my sister consulted one, I never knew that naturopathic oncologists existed. After witnessing the nightmare I’m living through due to radiotherapy aftereffects she is not interested in submitting to the same recommended treatment for her cancer. We both are of the mind that sometimes, for some people, quality of life is more valuable than a prolonged quantity of life. It will be interesting to see what things we will learn about other treatments from this alternative, integrative physician.

golden marguerite

Meanwhile, the current administration continues its efforts to cut funding for health care and cancer research. And now this:

If you’re under 65 and don’t have a chronic condition, there’s a very real chance you won’t have access to a Covid-19 vaccine this fall. Much depends on what happens next month. ACIP could defy the FDA and recommend vaccines for broader use, but that would be risky. We’ve never been in this situation before. ….. This isn’t about whether everyone needs a yearly Covid-19 vaccine—that’s a legitimate, ongoing scientific debate, and one ACIP was already tackling in June. This is about how decisions are made—and who gets to make them. FDA political appointees are sidelining expert panels, bypassing transparency, and turning public health into a performance. That might fly in other arenas, but shouldn’t when it comes to people’s health and daily lives. ….. Vaccine decisions must be rooted in evidence, debate, and transparency. ….. If this is the new model, we should all be alarmed.
~ Katelyn Jetelina
(Your Local Epidemiologist, May 21, 2025)

silver dollar eucalyptus

Closer to home, last summer I endured three episodes of seed tick bites on my legs following walks in the botanical garden. I thought I had solved the problem by using recommended permethrin as a repellent but when I took a walk there on Tuesday I was attacked again and now have 9 bites. I’m done! The pictures in this post are not worth the price I’m paying to have gotten them!

chamomile

chickadee, titmouse, junco

Up and away for life! be fleet!-
The frost-king ties my fumbling feet,
Sings in my ears, my hands are stones,
Curdles the blood to the marble bones,
Tugs at the heart-strings, numbs the sense,
And hems in life with narrowing fence.
Well, in this broad bed lie and sleep,-
The punctual stars will vigil keep,-
Embalmed by purifying cold;
The winds shall sing their dead-march old,
The snow is no ignoble shroud,
The moon thy mourner, and the cloud.
~ Ralph Waldo Emerson
(The Titmouse)

we all came from the sea

JohnFKennedy
“John Fitzgerald Kennedy” (1917-1963) by Alfred Eisenstaedt

I really don’t know why it is that all of us are so committed to the sea, except I think it’s because in addition to the fact that the sea changes, and the light changes and ships change, it’s because we all came from the sea. And it is an interesting biological fact that all of us have, in our veins, the exact same percentage of salt in our blood, in our sweat in our tears. We are tied to the ocean. And when we go back to the sea – whether it is to sail or to watch it – we are going back from whence we came.
~ John Fitzgerald Kennedy
(John F. Kennedy in His Own Words)

On August 7, 1961, when I was four years old, President John F. Kennedy, a long-time summer resident of Cape Cod, signed a bill authorizing the establishment of Cape Cod National Seashore. Tim & I spent many of our childhood summers at our grandparents’ homes on the Cape, and we have visited the National Seashore countless times as children, and as adults, too, bringing our own children there to explore nature and discover history.

simplicity of winter

Barred Owl by Mdf/Wikimedia Commons
Barred Owl by Mdf/Wikimedia Commons

The tendinous part of the mind, so to speak, is more developed in winter; the fleshy, in summer. I should say winter had given the bone and sinew to Literature, summer the tissues and blood.The simplicity of winter has a deep moral. The return of nature, after such a career of splendor and prodigality, to habits so simple and austere, is not lost upon either the head or the heart. It is the philosopher coming back from the banquet and the wine to a cup of water and a crust of bread.
~ John Burroughs
(Deep Woods)

a mote of dust suspended in a sunbeam

My next post was supposed to be about furniture arrangements and home decorating, but I’ve stalled big time. I’m hoping this week will be more productive as many things are sliding here on the home-front. Had a very annoyingly busy week and then when the time finally came to get back to finish moving the furniture I became glued to the TV, trying to comprehend all that was and still is happening in Japan. Sometimes the mundane things in life start to feel pointless. But then I guess that’s the horror of it, so many people with their lives interrupted or cut short – it’s overwhelming to try to take in… I don’t know anyone there, but I know that each life lost was the most important person in the world to somebody, and for them my heart breaks.

“Japan’s recent massive earthquake, one of the largest ever recorded, appears to have moved the island by about eight feet (2.4 meters), the US Geological Survey said.”

“The quake probably shifted the position of Earth’s axis about 6.5 inches, said Richard Gross, a geophysicist at the Jet Propulsion Laboratory in La Canada Flintridge.”

These numbers boggle my mind. In one sense we’re safely spinning through space on our relatively little blue spaceship, but when the planet starts readjusting itself it abruptly reminds us of how precious this life is, and how precarious in the grand scheme of things, whatever that scheme ultimately proves to be.

I feel something like a Who on the speck of dust in Dr. Seuss’s Horton Hears a Who! “A person’s a person, no matter how small.” We feel so very small in the face of this. Such a pale little blue dot, our earth. But such a cataclysmic upheaval of our big beautiful and often frightening planet.

Look again at that dot. That’s here. That’s home. That’s us. On it everyone you love, everyone you know, everyone you ever heard of, every human being who ever was, lived out their lives. The aggregate of our joy and suffering, thousands of confident religions, ideologies, and economic doctrines, every hunter and forager, every hero and coward, every creator and destroyer of civilization, every king and peasant, every young couple in love, every mother and father, hopeful child, inventor and explorer, every teacher of morals, every corrupt politician, every ‘superstar,’ every ‘supreme leader,’ every saint and sinner in the history of our species lived there – on a mote of dust suspended in a sunbeam.
~ Carl Sagan
(Pale Blue Dot)

As I’m writing this some of the lyrics of Pig, one of Dave Matthews’ older songs, one of my favorites, come back to me with added poignancy:

Isn’t it strange
How we move our lives for another day
Like skipping a beat
What if a great wave should
Wash us all away
Just thinking out loud
Don’t mean to dwell on this dying thing
But looking at blood
It’s alive right now
Deep and sweet within
Pouring through our veins
Intoxicate moving wine to tears
Drinking it deep
Then an evening spent dancing
It’s you and me
This love will open our world
From the dark side we can see a glow of something bright
There’s much more than we see here
Don’t burn the day away
~ Dave Matthews
♫ (Pig) ♫

All we have is this moment.  Let us not burn our days away…