Mental health among young adults has taken a troubling turn across the globe. A newly released report from Sapien Labs highlights a steady decline in youth mental well-being, with the sharpest drops occurring in wealthier countries. The findings challenge the common assumption that greater spending on mental health services leads to better outcomes.
The report points to several social and lifestyle shifts shaping this trend. Early smartphone exposure, heavy consumption of ultra-processed foods, weakening family relationships, and reduced spiritual engagement all appear connected to declining mental wellness. Data also shows that the pandemic accelerated an already developing pattern, pushing mental health scores among younger generations to historic lows.
The study drew attention after MindSite News journalist Courtney Wise conducted an email interview with Tara Thiagarajan, Ph.D., founder and chief scientist of Sapien Labs. The conversation explored what global data reveals about youth mental health and which lifestyle factors may help explain the widening gap between generations.
A Generational Drop in Mental Well-Being
Freepik | Research shows a permanent downward shift in the mental well-being of adults under 35.
Sapien Labs’ latest research describes a sharp decline in mental health among adults under the age of 35. The drop became especially visible during the pandemic and has not reversed since.
According to the report, nearly half of young adults now experience mental health challenges significant enough to interfere with daily productivity and functioning. The rate is more than four times higher than what older generations reported at the same age.
Researchers also identified a striking geographic pattern. The decline appears strongest in developed countries with high incomes and advanced healthcare systems.
Sapien Labs summarized the concern in the report:
“Today, almost half suffer mental health challenges of clinical significance that substantially impact their ability to function productively in daily life. This is over fourfold higher than their parents and grandparents.”
Another observation surprised researchers even more:
“The surprising aspect of this decline in younger generations is that it is most pronounced in the wealthier and more developed countries, where increased spending on mental health care has not moved the needle.”
The results suggest a long-term generational shift in mental health rather than a temporary trend.
Why Some Countries Show Better Mental Health
The data did not identify any nation where youth mental health ranks consistently high. Still, several countries showed stronger scores than others.
According to Tara Thiagarajan, nations with better mental wellness among young adults tend to share a few characteristics:
1. Higher levels of spirituality
2. Stronger family closeness
3. Lower consumption of ultra-processed foods (UPF)
4. Later access to smartphones during childhood
One example highlighted in the interview was Tanzania. Young adults there recorded an average Mind Health Quotient (MHQ) of 62. By comparison, the United States scored 36.
Other differences between the two countries stand out:
1. Spirituality rating: 7.6 out of 9 in Tanzania vs. 5 in the United States
2. Average age of first smartphone: 18.4 years in Tanzania vs. 12.8 years in the United States
3. Regular consumption of ultra-processed foods: 50% in Tanzania vs. 79% in the United States
These contrasts point to lifestyle patterns rather than healthcare access as possible drivers of youth mental wellness.
Ultra-Processed Foods and Brain Function
Freepik | Ultra-processed foods are significantly linked to increased mental health struggles.
Diet appears to play a powerful role in the mental health equation. The Sapien Labs research highlights strong links between mental health challenges and high intake of ultra-processed foods.
Processed sugar stands out as a major contributor. Yet Thiagarajan notes that other additives also raise concern. Artificial dyes, synthetic flavors, and preservatives may interfere with brain function.
These ingredients can affect the nervous system in several ways. Some additives show neurotoxic effects, while others disrupt signaling in the brain or contribute to inflammation.
The impact can show up in everyday abilities such as emotional control, concentration, and decision-making. Thiagarajan compared the effect to a vehicle that has not been properly maintained. When systems wear down, performance declines.
For young people who rely on adults to buy groceries, education about food choices becomes an important step. Understanding the connection between diet and mental health may encourage families to choose fresher foods with fewer additives.
The Gut-Mind Connection
Nutrition researchers continue to study how the gut microbiome influences brain health. Sapien Labs’ findings add more evidence to this growing field.
Countries with higher Mind Health Quotient scores tend to rely less on packaged food and more on fresh ingredients. That pattern supports the idea that gut health and brain function are closely connected.
At the same time, another factor may contribute to mental well-being: shared meals.
Communities that prepare and eat food together often maintain stronger social ties. Those daily interactions can strengthen emotional support systems. The benefits likely come from a mix of healthier ingredients and meaningful human connection.
Smartphone Exposure and Early Screen Use
Technology also plays a major role in the study’s findings. Young adults in countries with lower mental health scores typically received smartphones at a younger age.
Children in the United States, for example, often begin using smartphones in early adolescence. In contrast, young adults in Tanzania reported receiving smartphones around age 18.
More years spent on smartphones during childhood may reduce face-to-face interactions and replace real-world experiences with digital stimulation. The shift can shape emotional development and attention span over time.
Sapien Labs’ research suggests that delayed smartphone access may protect mental wellness during critical developmental years.
Emotional Control and Relationship Challenges
The report also examined common struggles reported by young adults. Emotional regulation, maintaining relationships, and staying focused ranked among the most frequent difficulties.
Instead of asking participants to speculate on the causes, the study focused on identifying environmental patterns linked to these challenges.
One strong correlation appeared between emotional control and ultra-processed food consumption. Researchers found that higher intake of these foods aligned with greater difficulties managing emotions and attention.
When brain signaling becomes disrupted, both thoughts and feelings can become harder to regulate. This pattern may explain why diet influences more than physical health.
The Role of Faith and Family Connections
Freepik | Strong family ties and community support help young adults build emotional resilience and maintain better mental health.
Another strong link appeared between mental health scores and social structures such as family closeness and spiritual life.
Countries with stronger Mind Health Quotient results often feature more collectivist cultures. These environments place greater emphasis on family relationships, shared responsibility, and community support.
Young adults raised in these settings often experience stronger emotional networks. Faith traditions may also provide a framework for meaning, resilience, and coping with stress.
Rather than focusing on specific beliefs, the research emphasizes the protective effect of connection itself. When individuals feel supported by family or community, their minds appear better equipped to handle difficult experiences.
Simple Foundations for Stronger Mind Health
The Sapien Labs report paints a clear picture: youth mental health challenges continue to rise, especially in wealthier nations. Higher spending on treatment alone has not reversed the trend.
The research instead highlights everyday influences that shape mental well-being over time. Clean food, healthy air and water, and strong social bonds support brain function. Meaningful experiences and human connection also matter for mental stability.
When young people consume large amounts of ultra-processed food, spend extensive time on smartphones, and experience weaker family ties, mental health appears to suffer.
The findings suggest that the building blocks of strong mental health remain straightforward. Nutritious food, real-world connection, and supportive communities still form the base for a healthy mind.