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

morningtide

6.24.20 ~ Eastern Point
Canada goose papa watching over his family in Avery Pond

One morning, four days after the beach “opened” for the season on June 20, we got up early and headed down there before it opened for the day. What a difference! Now that people have to pay for a pass to enter between 8am and 8pm the freeloaders and all their litter, cigarette butts and dog crap have disappeared. Peace is restored and we had such a lovely walk!

killdeer parent and three tiny chicks
near Avery Pond
killdeer on the run after the speedy little chicks

In contrast to the tranquil Canada goose family, the killdeer parents were beyond frantic, chasing after and chirping to their three chicks, who were darting all over the place and in every direction. It made getting their pictures next to impossible! They blended in well with the gravel.

the morning dew promised a humid day

Someone is tending some beautiful rose bushes near the entrance, along the chain link fence.

rose and chain link fence

I love the contrast between rusty old metal and fresh new flower.

rose and buds

The water was very calm on the river/estuary side of the point.

juvenile gull
female common eider
flying over the Thames River estuary
underwater and above-water seaweed
please, please, please

Another risk factor to worry about:

The two stretches of DNA implicated as harboring risks for severe COVID-19 are known to carry some intriguing genes, including one that determines blood type and others that play various roles in the immune system. In fact, the findings suggest that people with blood type A face a 50 percent greater risk of needing oxygen support or a ventilator should they become infected with the novel coronavirus. In contrast, people with blood type O appear to have about a 50 percent reduced risk of severe COVID-19.
~ Dr. Francis S. Collins
(Genes, Blood Type Tied to Risk of Severe COVID-19,
NIH Director’s Blog, June 18, 2020)

I have type A blood. Fortunately my husband, children, and grandchildren are all type O. Reading this article made me glad that we haven’t let our guard down and continue to remain firmly self-quarantined. And now our governor has ordered out-of-state travelers to quarantine for two weeks when entering Connecticut because of the way COVID-19 is spreading like wildfire in so many other states. I’m glad to know he is still looking out for us. The numbers are getting very alarming again.

It’s good to know my beach sanctuary is available to me again, at least for the summer. Looking forward to many early morning walks on the sand.

The salt of those ancient seas is in our blood, its lime is in our bones. Every time we walk along a beach some ancient urge disturbs us so that we find ourselves shedding shoes and garments, or scavenging among seaweed and whitened timbers like the homesick refugees of a long war.
~ Loren Eiseley
(The Unexpected Universe)

gull tracks

I like this place, and willingly could
Waste my time in it.

~ William Shakespeare
(As You Like It)

? near Beach Pond
red-winged blackbird near Beach Pond

We are nature. We are nature seeing nature. The red-winged blackbird flies in us.
~ Susan Griffin
(Made from this Earth: An Anthology of Writings)

birthday #99

1.30.14 ~ Storrs, Connecticut
Aunt Lil and her great-granddaughter, Ashleigh
1.30.14 ~ Storrs, Connecticut

Thursday Tim & I briefly came out of our seclusion to attend my aunt’s 99th birthday party at the nursing home she moved into last August, a few weeks before my father died. It was heartwarming that so many of those who love her were able to take off of work or school to attend an afternoon party on a Thursday, so she wouldn’t be too tired to enjoy one later in the day.

1.30.14 ~ Storrs, Connecticut
the collage Ashleigh made for the occasion

Auntie’s doctor approved the celebration and gave her permission to have as much champagne, cheesecake and black raspberry ice cream as she desired.

1.30.14 ~ Storrs, Connecticut
good job blowing out the candles
on the birthday cheesecake

I had not visited Auntie at the nursing home since August because of the illnesses and deaths of my father and Tim’s brother. She looks better than I thought she might have and I was pleased and relieved to see that she is being well cared for. Hopefully we can visit more often now that the dust is beginning to settle around here.

1.30.14 ~ Storrs, Connecticut
1.30.14 ~ Storrs, Connecticut

Aunt Em and Aunt Lil entertained us with stories from their “hen party” days. When I was a child, my four aunts, Mary, Jean, Lil and Em, their cousin, Aunt Julia and her friend Stella, and my mother would gather at Aunt Em’s house when she lived in New Jersey. In January because most of their birthdays fell in that month. They would go into “the city” (New York) for the day and evening and leave us children with the fathers and uncles.

The fathers and uncles let us get away with all kinds of mischief. They’d be watching football on TV and drinking beer. One time one of the cousins tried to do a somersault over a chin-up bar and whacked his head on the ceiling in the process. Uncle Andy exclaimed, “Now that’s what I call using your head!” We laughed about that bit of irony for hours…

My Aunt Jean was the first of the gang to die, in 1986. She was my favorite aunt – we shared a birthday, a love of cats and children, the color purple (when I grew up blue became my favorite color), a lot of personality traits, and the A, RH-negative blood type. And now I’ve learned that she also shared my sensitivity to alcohol. It didn’t take much to get her tipsy and very sleepy. Aunt Em and Aunt Lil remembered one time when she fell asleep with her head on the table at a luncheon. And another time when she got home she climbed into the crib with her son and they eventually found her sleeping there.

1.30.14 ~ Storrs, Connecticut
Aunt Em and Aunt Lil

Aunt Em took the train up here from Maryland – she usually drives, but not in the winter. If I live to be 86 I hope I will be as vivacious as she is! Aunt Em and Aunt Lil are the last surviving siblings of the eight children their parents had.

1.30.14 ~ Storrs, Connecticut
Chelsea and Aunt Lil

Chelsea is the wonderful caregiver who worked full time for us for a year, until my father died, making it possible for Aunt Lil and my father to live at home. We all became very attached to her, especially Auntie.

1.30.14 ~ Storrs, Connecticut
a quiet moment with my sister, Beverly

When it was time to go I got a big long hug from my Auntie and we both started crying and told each other, “I love you.” Beverly had explained to her about Toby’s untimely death and she seemed to understand what a rough time we’ve been having. She held hands with Tim for a moment.

What an emotional roller-coaster we’ve been on this past year…  Like my sister, I wish I had the resources to care for our aunt at home but I’m relieved to know she’s safe and well cared for. And I hope she will treasure happy memories of her 99th birthday party.