Lactose Intolerance in African Americans

Published: May 5, 2020
Updated: March 20, 2022
Better Black Health

3 out of 4 of Us Has Lactose Intolerance

Three out of four African Americans are lactose intolerant.  Lactose intolerance means that if you drink milk, eat yogurt, have cheese, or any other dairy-based product in large amounts, your digestive system will have difficulty digesting it.  Most people report feeling bloated and later have loose gassy stool (sorry . . . but these are the facts).

If you are not near a toilet (of your choice), this can be an embarrassing problem.  The stomach’s reaction to not being able to digest lactose (a sugar in dairy products) is to simply flush it through its system.   For a majority, lactose intolerance in African Americans simply leads to the avoidance of milk and milk-related products.

“Milk is Bad for US??”

The significantly decreased intake of milk and dairy products in the African American diet presents a potential increased health risk as “moderate evidence shows that the intake of milk and milk products is associated with a reduced risk of cardiovascular disease, type 2 diabetes, and lower blood pressure in adults”.  Constance Brown-Riggs in her article “Nutrition and Health Disparities: The role of Dairy in Improving Minority Health Outcomes” has recommendations for African Americans to consume three to four servings of low-fat dairy daily.

If only one serving of dairy causes stomach upset and loose stool . . . what will three servings cause?  That question is what many African Americans ask themselves, and the answer has been very clear.  African Americans drink significantly less milk and eat substantially less cheese and yogurt when compared to the rest of the American population.

The decreased dairy consumption leads to decreased intake of essential nutrients that are found in milk and cheeses. Studies show that African Americans’ intake of the required nutrients calcium, vitamin D, and potassium were all lower than white and Hispanic Americans.  And it has been well known in medical circles that African Americans have significantly lower vitamin D levels in their blood.

A Genetic Link for Lactose Intolerance??

Lactose Intolerance in African Americans

The choice for African Americans to avoid milk and related products is not voluntary.  Lactose intolerance in African Americans may be due to a genetic design.  Research has shown that the proportion of people that are lactose intolerant can be tied to their region of genetic origin.  Put simply, regions where dairy herds could be raised safely and efficiently produced people that could digest lactose. Harsher climates in African and Asia restricted the availability of milk, and produced people with much more lactose intolerance, a study at Cornell University found.  Researchers found a wide range of lactose intolerances with as low as 2 percent of the population of Denmark descendants as unable to have dairy products compared to nearly 100 percent of the people with Zambian African origin.

Their survey “found that lactose intolerance decreases with increasing latitude and increases with rising temperature”.

Lactose Intolerance in African Americans
Red = Lactose Intolerant, Green = Lactose Tolerant, Brown = 50/50

Several adjustments and corrections are needed when we get down to African American-centered advice. The United States Department of Agriculture (USDA) has several health recommendations based on dairy-based diets. Yet, four of five African Americans are lactose-intolerant and cannot easily fulfill that requirement. While most whites need to begin calcium supplements in mid-life to support strong bones, many researchers believe that calcium supplements may actually harm some people of African descent.

The calcium supplements that help people of European descent may increase the risk for some cancers in people of African descent. An extensive research study in 2022 showed that Black men who had higher calcium in their diet (milk, cheese, etc) had a higher prostate cancer risk. Read more about this in the “Better Black Health” book section on prostate cancer.

Dr Greg Hall
Available on Amazon and other Bookstores

There are other differences in our healthcare that are being ignored, and all of them are covered in “Better Black Health: A Comprehensive Guide in the Age of Precision Medicine.” Get your copy today!

Dr. Hall’s Podcast “Better Black Health” discusses multiple issues related to African American health . . . take a listen.

The impact of leaving African doesn’t end with vitamin D, look at Displaced: Why African Americans need their own multivitamin. 

Dr Greg Hall

Greg Hall, MD is a physician, author, speaker, inventor, professor, and public health professional, specializing in urban health and the clinical care of African Americans. Dr. Hall’s extensive research in the care of African Americans lead to the development of GNetX Sequence Multivitamins a supplement developed to support African American needs. Most recently, Dr. Hall established the National Institute for African American Health, which is a nonprofit designed to promote health-related education, support students interested in a career in medicine, and serve as an advocate for African American patients. You can keep in touch with Dr. Hall by tuning into his Better Black Health Podcast where he covers Black American health topics.

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