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

second dozen

… continued from previous post

We chanced across a patch of yet another species of trillium. This lance-leaved trillium is the 12th kind of trillium I have pictures of on this blog. There are about 50 known, worldwide.

lance-leaved trillium
wild blue phlox

Last fall when we saw the huge leaves falling down around the bigleaf magnolia I did some research and learned that people often miss seeing the flowers in the spring because they are so high up in the tree. So I’ve been looking up on every visit since spring got started. On this day I saw some buds and new leaves emerging and used the zoom lens to get a picture. (above)

spreading Jacob’s ladder
spreading Jacob’s ladder
Florida anise tree

Mountain witch-alder or large fothergilla is a 6-12 ft., sometimes taller, deciduous shrub with picturesquely crooked, multiple stems. Dense, dark blue-green, leathery foliage becomes colorful in fall. The fragrant flower, appearing as a mass of stamens, is white and occurs in thimble-like, terminal spikes after the leaves have appeared.
~ Lady Bird Johnson Wildflower Center website

mountain witch-alder
Venus flytraps

Maybe the sunlight was different this year but the Spanish lavender’s hues seemed a lot deeper, compared to last year’s photos. I love this vivid color!

Spanish lavender

to be continued …

bigleaf magnolia

10.30.24 ~ tufted titmouse
North Carolina Botanical Garden

For this walk we set out to locate the bigleaf magnolia specimen at the botanical garden because we heard its leaves were changing color for fall. But along the way I spotted an adorable titmouse waiting for a turn at the birdfeeder…

… and an American witch hazel in bloom with a caught leaf…
… and a cardinal playing peek-a-boo
bigleaf magnolia ~ autumn leaves

The native range of this southeastern tree is spotty, but the botanical garden is home to this majestic magnolia.

The bigleaf magnolia has the largest simple leaves and largest flowers of any tree indigenous to North America. It is a rare, native, deciduous, pyramidal tree with a single trunk and develops a spreading, broad, rounded crown with age, and grows 30 to 40 feet tall and equally as wide. It may be semi-evergreen in the deep south. The huge oblong-obovate leaves measure up to 3 feet long and 1 foot wide. The leaves are green above and silvery-gray and pubescent below. Showy fragrant flowers are creamy-white with rose-purple at the petal bases, and measure 8 to 14 inches in diameter. Although quite large, the flowers are often located far off the ground and are not always easy to see close up. The flowers give way to spherical cone-like fruits which mature to red in late summer, releasing individual red-coated seeds suspended on slender threads at maturity.
~ N.C. Cooperative Extension website

I have to admit I haven’t paid too much attention to this tree, even though we pass by it often in the Mountain Habitat part of the garden. I will try to look up more often to see if I can see the flowers and then the seeds in the coming seasons. But for now, these are the huge leaves in their fall colors.

Perhaps because the flowers are located so far off the ground is the reason I never noticed them before. I hope the zoom lens on my camera can get some pictures of them in the spring.

looking up through flowering dogwood branches and leaves
to the bigleaf magnolia canopy

I love the contrast between the size and colors of the dogwood leaves and the huge magnolia leaves, high above them. Since the dogwood leaves are closer to the camera and they still seem much smaller it gives a little perspective.