The Duffy Gene: A Hidden Superpower in Black Communities?
What Dr. Thomas Rashad Easley’s Journey Can Teach Us About Genetics, Health Advocacy, and Knowing Your Body
When Dr. Thomas Rashad Easley went in for a routine physical, he expected the usual conversation about maintaining good health. Instead, he found himself on a months-long journey through blood tests, specialist appointments, medical bills, and uncertainty.
His doctors repeatedly told him that his white blood cell counts appeared low. Over several months, he underwent testing, consulted a hematologist, and worried that something serious might be wrong.
In the end, the answer wasn't a disease at all.
It was the Duffy gene.
And his story highlights an important health issue that many African Americans have never heard about—even though it affects millions of us.
"Something Is Wrong With Your Blood"
Like many people, Dr. Easley initially felt alarmed when doctors noticed abnormalities in his bloodwork.
His primary care physician referred him to a hematologist after seeing unusual patterns in his white and red blood cell counts. Over several months, he underwent repeated testing as doctors attempted to identify the cause.
"For about four months, I was freaking out. I didn't know what was going on with me. I'm spending money every time I go to the doctor and not getting direct answers."
The possibility of additional testing, including a bone marrow biopsy, was discussed. Yet despite the concerning lab results, Dr. Easley felt healthy.
In fact, he was thriving.
He had lost weight, improved his overall health, and received some of the best physical exam results of his life.
That disconnect led him to ask an important question:
If my blood work looks abnormal, why do I feel so healthy?
What Is the Duffy Gene?
The Duffy gene provides instructions for making a protein called the Duffy antigen, which is found on the surface of red blood cells.
For thousands of years, this genetic trait has played an important role in human survival.
In regions where malaria was common, particularly throughout Sub-Saharan Africa, people with a variation known as the Duffy-null phenotype developed natural protection against a form of malaria called Plasmodium vivax.
Because the malaria parasite uses the Duffy antigen to enter red blood cells, people who lack the antigen are often protected from infection.
Over generations, this protective trait became common among people of African ancestry.
As Dr. Easley's hematologist explained:
"It actually dates all the way back to Sub-Saharan Africa."
Why Many Black People Have "Low" White Blood Cell Counts
One of the most important aspects of the Duffy-null phenotype is its connection to lower neutrophil counts.
Neutrophils are a type of white blood cell that help fight infection.
Research shows that many people with the Duffy-null trait naturally have lower neutrophil counts without experiencing health problems. Historically, this has been referred to as benign ethnic neutropenia.
The challenge is that many laboratory reference ranges were developed using predominantly White populations.
As a result, healthy Black patients are sometimes flagged as "abnormal" when their blood counts are actually normal for them.
During the podcast discussion, multiple participants shared similar experiences of being told they had low white blood cell counts, undergoing additional testing, and later learning that their numbers were normal for their genetic background.
The Cost of Not Knowing
Dr. Easley's story highlights a larger issue within healthcare.
When providers are unfamiliar with genetic variations that are common among Black populations, patients may experience:
Unnecessary anxiety
Additional specialist referrals
Extra testing
Increased healthcare costs
Delayed diagnoses
Exclusion from clinical trials
Many Black participants in clinical research have historically been excluded because of laboratory values that were interpreted as abnormal, even when those values reflected natural genetic variation.
That's why representation in medical research matters.
"You Have to Be a Partner in Your Own Healthcare"
One of the most powerful themes from the conversation was self-advocacy.
Dr. Allison Mathews shared that her mother spent months seeing multiple specialists before doctors finally identified a rare genetic condition.
The lesson?
Doctors are experts, but they don't automatically know everything about every patient.
As Dr. Mathews explained:
"You are a partner in your own healthcare."
Medicine often involves a process of elimination. Physicians rely on information from patients, family history, laboratory results, and collaboration with specialists to arrive at answers.
That means patients must also ask questions, seek information, and advocate for themselves.
The Connection Between Genetics, Lifestyle, and Health
Another important discussion centered on the difference between genetics and epigenetics.
While genetics refers to the DNA we inherit from our ancestors, epigenetics describes how factors such as:
Diet
Stress
Environmental exposures
Physical activity
Trauma
can influence how genes are expressed over time.
Dr. Easley believes lifestyle changes played an important role in his health improvements.
Over several months, he adopted a predominantly raw plant-based diet, practiced intermittent fasting, and focused heavily on reducing inflammation.
Whether these changes directly affected his blood markers is still a question for scientific research, but his story reflects a growing body of evidence showing that lifestyle can significantly influence overall health.
Why This Matters for Black Communities
The Duffy gene reminds us that health isn't one-size-fits-all.
Too often, medical standards are developed without fully accounting for the diversity of human biology.
Understanding genetic traits like the Duffy-null phenotype helps:
Reduce unnecessary fear
Improve diagnostic accuracy
Promote equitable healthcare
Increase representation in research
Empower patients to advocate for themselves
As one participant noted during the discussion:
"It's not a defect. It's a protective factor."
What was once a survival advantage against malaria continues to shape how many Black Americans experience healthcare today.
Questions to Ask Your Doctor
If you've ever been told you have a low white blood cell count, consider asking:
Could this be related to the Duffy-null phenotype?
Have I been tested for the Duffy antigen?
Are my blood counts normal for someone with my ancestry?
Would genetic testing be helpful?
Could this affect my eligibility for clinical trials or certain medications?
The Bottom Line
Dr. Easley's experience started with worry and uncertainty.
It ended with a deeper understanding of his ancestry, his health, and the importance of asking questions.
The Duffy gene is more than a genetic marker.
It's a reminder that Black health deserves Black-centered research, culturally informed healthcare, and medical standards that recognize the full diversity of our communities.
At Curated Clinical, we believe knowledge is power—and sometimes the answers we're looking for are already written into our DNA.
Watch the full Curated Clinical conversation with Dr. Thomas Rashad Easley on the Duffy Gene and learn more about how genetics, ancestry, and health intersect in Black communities.