health and wellness
Lactose intolerance is actually the human norm – but racism, the US government and business interests have made it into a condition
Lactose intolerance is the global human norm, but Western dietary standards, government policies and commercial interests helped frame it as a medical deficiency.
Hilary Smith, University of Denver
Lactose intolerance makes drinking milk or eating ice cream a literal pain. For some people, eating a dairy treat can lead to bloating, nausea and diarrhea. You might’ve experienced its effects yourself. If so, you may think of lactose intolerance as a defect rather than the norm.
But did you know that most people in the world today are lactose intolerant – and that the condition itself was invented in the 1960s?
“Surely you mean discovered, not invented,” I hear you saying. I don’t. As a historian who has traced the origins of nutrition-science ideas, I have chosen the word “invented” on purpose.
Inventing lactose intolerance
Variations in people’s ability to digest lactose first came to scientists’ attention after American dairy producers found a way to rid themselves of a postwar milk surplus. To offload what they couldn’t sell, they looked to the government to intervene. And it did, buying the excess and embedding it in school lunches and other places with publicly funded meals.
Suddenly, many people who had not habitually drunk milk were consuming it regularly, including not only some Americans but also people overseas. Part of that same milk surplus found its way into school lunches in places such as Japan and Taiwan in the 1950s as the American government began to sell milk to allies during the Cold War.
Many of the groups drinking milk regularly for the first time did not like it. In fact, it made them feel sick. Intrigued, scientists set up experiments to figure out why. In a 1966 study comparing how Black and white people incarcerated in Baltimore metabolized lactose, researchers found that Black participants had lower levels of lactase – the enzyme that breaks down lactose – in their guts.
To the white scientists conducting this study, the trouble that the Black prisoners had digesting milk looked like an “inborn error of metabolism.” They assumed that the normal human state was lactose tolerance and that the lactose intolerant had inherited a genetic mutation.
It was only after years more work with research participants of many races that experts realized that, as one National Institutes of Health official put it in 1981, “lactose intolerance is a normal physiological condition, shared by every adult animal except for certain ethnic and racial groups in man.” People of northern European descent, it turned out, were the weird ones. It was their ancestors who had passed down a genetic mutation – one that made them able to digest milk after infancy.
In short, what scientists discovered in the 1960s was that different bodies process milk differently. What they invented was the idea that lactose intolerance is a defect. Accepting that framing would mean nearly two-thirds of the human population – the estimated prevalence of lactose intolerance worldwide – is defective.
Instead of acknowledging that dairy-free diets can be healthy, people innovated ways to overcome this supposed disability so everyone could consume more.
Nutritional imperialism
Lactose intolerance is one example of what I call nutritional imperialism: a way of thinking that treats white diets as the norm and everyone else’s as an aberration.
Nutritional imperialism was common in the 20th century, when scientists thought that not only milk-rich but also meat-heavy diets were best; they considered diets outside of the United States and Europe too vegetarian. Some also argued that wheat flour, not rice, ought to be the universal staple.
The same bias applied to bodies. Besides faulty lactose digestion, nonwhite bodies were accused of other failures, too, such as aldehyde dehydrogenase deficiency, an inability to digest alcohol quickly. The less technical term for this may be more familiar: Asian flush.
Such differences might have been thought of as variety, just another way of being human. Instead, each became a deficiency.
Many people today have inherited and perpetuated this way of thinking without knowing it, including those who are deemed deficient by it. In 1959, the director of Japan’s nutrition bureau declared that “rice-eating peoples” such as the Japanese were “resigned and passive” and could correct this by imitating Western diets and switching to wheat.
Today, the most prominent scientist promoting the idea that Asian flush is a disease is a geneticist of Taiwanese descent who started a research consortium to study “the most common human enzymopathy in the world.”
The Chinese Nutrition Society placed a tall glass of milk next to its 2022 Food Guide Plate – never mind estimates that the vast majority of Han Chinese, the largest ethnic group in China and worldwide, are lactose intolerant.
Turning sickness back into difference
Science that pathologizes difference helps racism persist.
In recent years, white supremacists have embraced the concept of lactose intolerance as a distinguishing debility of nonwhite people. Social media users have copied and pasted a map of the geographic distribution of lactose tolerance originally published in the scientific journal Nature into racist chat threads on the online discussion forum 4chan.
In 2017, internet trolls disrupted an anti-racist art installation with neo-Nazi chants and messily downed jugs of milk to accentuate their white identity.
Turning a lactose-digestion difference into a deficiency has done more to reinforce narratives of racial hierarchy than to improve public health. So here’s a suggestion: If you enjoy eating dairy, keep doing it; if you don’t, don’t – and know that there is nothing wrong with you.
Hilary Smith, Professor of History, University of Denver
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Child Health
Changing the Landscape of Childhood Cancer Survivorship
Childhood Cancer: hile “cancer” is a term no family wants to hear, especially when it comes to their children, there is reason for hope. Today, 85% of children diagnosed with cancer survive at least five years. Survival is only part of the journey, however.
Changing the Landscape of Childhood Cancer Survivorship
(Feature Impact) While “cancer” is a term no family wants to hear, especially when it comes to their children, there is reason for hope. Today, 85% of children diagnosed with cancer survive at least five years, according to the National Cancer Institute, up from 75% three decades ago.
Watch this video to learn more
“This progress is driven in large part by dedicated research,” Hyundai Hope on Wheels Board Member Kevin Reilly said. “Over the last 28 years, Hyundai Hope on Wheels has committed over $300 million in pediatric cancer research and program grants, awarding more than 1,600 grants to 210 medical institutions nationwide, impacting thousands of young lives each year.”
Survival is only part of the journey, however. Nearly half (46%) of U.S. adults believe a child ringing the hospital bell after cancer treatment means the child is cancer-free and their medical journey is largely over, according to a survey conducted by Atomik Research on behalf of Hyundai Hope on Wheels. For the children and families living through a diagnosis, the reality is far more complex.
“The reality is that healing continues long after treatment, which is why sustained investment in survivorship care is a priority for us,” said John Guastaferro, executive director of Hyundai Hope on Wheels.
Isabella Franco-Capps, 11, understands that journey firsthand. Diagnosed with B-cell acute lymphoblastic leukemia at age 5, her journey took two years before she could say she’s “a cancer survivor.”
“I was diagnosed with b-cell acute lymphoblastic leukemia,” she said. “This began my two-year-long journey of scans, pokes, chemotherapy and hospital stays. And now I’m a cancer survivor.”
Fellow Hyundai Hope on Wheels National Youth Ambassador, Jackson Trihn, 12, is using his voice to call for continued research and to bring hope to others.
“The role … is being able to share my story,” he said. “Not just to spread awareness but to spread hope to kids that need it. And awareness is so important because people don’t understand how hard pediatric cancer can be.”
Continued progress can help ensure more children ring the bell and receive the care and support they need long after they’ve had the opportunity to do so. To learn more about these efforts and how you can help, visit HyundaiHopeOnWheels.org.
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(Feature Impact) Driven by rising rates of obesity, diabetes, high blood pressure and other risk factors,cardiovascular disease has surpassed cancer as the leading cause of death among Hispanic adults in the United States.
Hispanic people represent nearly 1 in 5 of the U.S. population and are the nation’s largest ethnic minority group, yet many continue to face barriers to achieving heart health and accessing high-quality healthcare. A new scientific statement published in the American Heart Association’s flagship journal, “Circulation,” revealed how social, economic, cultural and environmental factors contribute to persistent disparities in cardiovascular health, calling for culturally tailored prevention strategies, equitable access to care and greater representation of Hispanic populations in cardiovascular research.
“Hispanic populations in the U.S. are incredibly diverse even within their own communities with differences in genetic ancestry, language, cultural traditions and social experiences that can significantly influence cardiovascular health,” said Johanna Contreras, M.D., M.Sc., FAHA, director of the Division of Heart Failure and medical director of the Hispanic Heart Center within the Mount Sinai Health System. “Yet Hispanic people remain underrepresented overall in the research that guides prevention and treatment strategies… Without better representation and more detailed data, we risk overlooking important differences that can help us improve care and save lives.”
Hispanic Cardiovascular Health by the Numbers
Cardiovascular risk factors – obesity (nearly 46%), type 2 diabetes (15.5%) and high blood pressure (approximately 44%) – are prevalent among Hispanic adults and often emerge at younger ages and occur more frequently among Hispanic adults compared with white adults.
According to the report, only about 1 in 5 Hispanic adults achieves ideal cardiovascular health as defined by the American Heart Association’s original Life’s Simple 7 metrics. Updated analyses using the Life’s Essential 8 framework demonstrated persistent disparities for heart and brain health, as well as suboptimal dietary quality, sleep patterns and levels of physical activity.
Social and Economic Barriers Matter
Biology alone does not explain cardiovascular health disparities. The environments where people live, work and age, along with social and economic challenges, impact heart health. In fact, approximately 17% of Hispanics live below the federal poverty threshold, compared with 8.2% of white adults.
“Many Hispanic adults face obstacles that extend far beyond the doctor’s office,” Contreras said. “Limited health insurance coverage, language differences, food insecurity, environmental exposures and concerns related to immigration status can make it more difficult to prevent disease, manage chronic conditions and receive timely treatment.”
Contreras emphasized the cultural values and practices of Hispanic people also influence how they perceive their health and healthcare options.
“Family plays a central role in many Hispanic communities and can be an extraordinary source of strength, support and resilience,” Contreras said. “At the same time, family members are often called upon to translate medical information, navigate health systems and help make healthcare decisions for loved ones. Those responsibilities can shape how health information is understood and acted upon.”
An Action Plan for Improving Hispanic Health
There are practical opportunities to achieve equitable cardiovascular health and reduce disparities through community engagement, culturally responsive care, inclusive research and policies that address the underlying drivers of health.
“Reducing cardiovascular disease among Hispanic populations demands action at every level,” Contreras said, “from improving access to culturally responsive care and expanding research participation to addressing the social and environmental conditions that shape health.”
By addressing both medical risk factors and the social conditions that shape health, experts believe there is an important opportunity to reduce disparities and help more people live longer, healthier lives. Learn more at Heart.org.
Photo courtesy of Shutterstock
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Food and Beverage
Beyond Protein: 2 Nutrients Your Plate Might Be Missing
Nutrients: Everyone is talking about protein these days whether watching their weight or managing a disease like type 2 diabetes. However, fiber and healthy fats are nutrients many people are overlooking. One food that makes it easier to invest in your health, according to nutrition experts: avocados.
Beyond Protein: 2 Nutrients Your Plate Might Be Missing
(Feature Impact) Everyone is talking about protein these days whether watching their weight or managing a disease like type 2 diabetes. However, fiber and healthy fats are nutrients many people are overlooking. The latest reports show most Americans already meet or exceed recommendations for protein while nearly all (about 95%) do not eat enough fiber, and many people consume too much saturated fat versus unsaturated fat, according to the 2025 Dietary Guidelines Advisory Committee. Prioritizing ways to get more fiber and healthy fats on your plate could be key to managing weight and type 2 diabetes goals this summer.
One food that makes it easier to invest in your health, according to nutrition experts: avocados.
A growing body of research and materials from Avocados – Love One Today, a science-based resource, suggests fresh avocados offer weight management benefits, help with type 2 diabetes management and are good for blood sugar management.
According to a study* of more than 27,000 adults published in the journal “Internal Medicine Review,” people who ate just over half of an avocado per day weighed 7.5 pounds less, had smaller waist sizes and tended to have healthier overall eating habits, including higher intakes of fiber and healthy fats, compared to people who didn’t eat avocados. Among the list of benefits, this delicious and healthy fruit uniquely contains fiber and healthy fats in each nutrient-dense bite which slows digestion, helping you feel satisfied and fuller longer which can help you consume fewer calories overall. In fact, if you’re using a GLP-1, avocados are one of the foods to add to your menu to make small meals feel more filling and satisfying while supporting nutrient needs.
Scientists also recently took a second look at the largest study* about avocado consumption to-date involving close to 1,000 adults, per the journal “Current Developments in Nutrition,” and found that consistently eating one avocado every day for six months (no other diet changes required) significantly reduced dietary glycemic load (GL) by nearly 14 points, a metric that evaluates how what you are eating is affecting your blood sugar levels. GL may be an important consideration in the management of chronic diseases like type 2 diabetes. By slowing digestion, fiber and healthy fats also support stable blood sugar levels.
There are many ways to enjoy avocados, including chopped, sliced, mashed, blended, in baked goods or even frozen. Avocados add flavor, variety and nutrition across the day.
Try these recipes for Avocado and Blueberry Chia Pudding, Avocado Breakfast Bowl with Leafy Greens for your next breakfast or snack.
*Remember: Small, consistent food choices can add up over time. Research suggests regularly eating avocados may support weight management and blood sugar targets while providing the fiber and healthy fats that many Americans are overlooking. These studies were supported by the Avocado Nutrition Center. While these findings are encouraging, the studies highlighted show an association, not cause and effect, and thus more research is needed to confirm these findings in other populations.
To explore evidence-based avocado nutrition information, along with practical tips and easy recipes, visit Avocados – Love One Today, a leading resource for avocado nutrition information.
Avocado and Blueberry Chia Pudding
- 1 1/2 cups plain, unsweetened soy milk (or milk of choice)
- 1 ripe, fresh avocado, halved, pitted and peeled
- 3/4 cup frozen blueberries
- 1/2 cup unsweetened vanilla Greek yogurt
- 1 tablespoon maple syrup
- 1/3 cup chia seeds
To Serve:
- 1/3 cup granola
- 1/3 cup fresh blueberries
- 1 kiwi, chopped
- 1/2 fresh, ripe avocado, halved, pitted, peeled and chopped
- In blender, puree soy milk, avocado, blueberries, yogurt and maple syrup until smooth. Pour mixture into storage container or bowl and add chia seeds. Whisk well to combine. Cover with lid or plastic wrap and refrigerate 4 hours or overnight, until thickened.
- To serve, divide into bowls and top with granola, fresh blueberries, kiwi and avocado.
- Notes: Use any milk (dairy or non-dairy) that you prefer in pudding. Use fresh blueberries or conventional frozen blueberries. Other topping options include: nuts, seeds, hemp hearts, sliced banana or strawberries, or nut butter.
Avocado Breakfast Bowl with Leafy Greens
Bowl:
- 1 medium sweet potato, chopped (about 1 3/4 cup)
- nonstick cooking spray
- 1/4 teaspoon smoked paprika
- 1/4 teaspoon garlic powder
- 1/4 teaspoon salt
- 1/2 cup quinoa
- 1 cup water, plus additional for boiling eggs, divided
- 2 eggs
- 2 cups arugula
- 1 ripe, fresh avocado, halved, pitted, peeled and chopped
- 1/4 cup pickled red onions
Avocado Tahini Dressing:
- 1/2 large avocado
- 1/4 cup tahini
- 1 lemon, juice only (2 tablespoons)
- 3/4 cup water
- 1 tablespoon fresh chives
- salt, to taste
- pepper, to taste
- Preheat oven to 400 F. Add chopped sweet potato to baking sheet. Spray with cooking oil then add smoked paprika, garlic powder and salt. Toss to coat in spices. Bake 22-25 minutes, or until tender.
- In medium saucepan, add quinoa and water. Bring to simmer and cover, cooking 12-15 minutes, or until quinoa is tender and fluffy.
- Fill small saucepan with water and bring to boil. Use slotted spoon to lower eggs into water. Cook 8 minutes then transfer eggs to bowl of ice water to cool before peeling.
- To make dressing: In small blender, puree avocado, tahini, lemon juice, water and fresh chives until smooth. Add more water, 1 tablespoon at a time, if needed, to thin until pourable. Season with salt and pepper, to taste.
- Assemble bowls, each with 1/2 sweet potato, 1/2 cup quinoa, 1 egg, 1 cup arugula, 1/2 avocado, 2 tablespoons pickled red onion and 3 tablespoons dressing. Reserve remaining dressing in refrigerator.
Heart-Healthy Frozen Avocado Banana Paleta
- 1 ripe, fresh avocado, halved, pitted, peeled and diced
- 4 cups orange juice
- 2 medium bananas, peeled and sliced
- 1 tablespoon lime juice
- 8 paper cups (5 ounces)
- 8 wooden craft sticks
- In blender, blend avocado, orange juice, bananas and lime juice on high until smooth. Divide into paper cups. Cover cups with aluminum foil. Insert one stick through center of each foil. Freeze 4 hours until firm.
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