Kenya has the sixth highest documented burden of conduct disorder in the world, a childhood condition rooted in poverty, instability and exposure to violence. The ranking sits at the intersection of two crises: a genuine concentration of the adversity that drives the condition, and a mental health system too thinly staffed to properly diagnose and treat it. 

That finding sits within a far larger picture. New global data shows the number of people living with a mental health condition has crossed 1.17 billion, a burden that has grown across every measurable dimension since 2017. Anxiety and depression dominate by scale, conflict and economic precarity are reshaping the geography of who is affected, and for children in countries such as Kenya, the gap between documented need and available care remains stark. 

Conduct disorder is characterised by persistent difficulties with rule-following, aggression and social behaviour in children and adolescents, and is strongly associated with adverse childhood experiences, household instability, extreme poverty and sustained exposure to violence, circumstances disproportionately common across much of the region. 

The figures come from the Institute for Health Metrics and Evaluation’s Global Burden of Disease Study 2023, covering 169 countries and territories across six years. They position an East African nation of approximately 55 million people among the half-dozen countries where this childhood condition has reached its highest documented prevalence anywhere on earth. 

The same tracker, mapping ten diagnostic categories from 2017 to 2023, shows conduct disorder affects an estimated 39.5 million people globally at a rate of 489 per 100,000. Kenya’s national rate sits near 840 per 100,000, behind only Nigeria, Equatorial Guinea, Ethiopia, South Sudan and Zambia, with the rest of the top fifteen almost entirely other sub-Saharan African countries. 

Treatment gap leaves majority of people with mental health conditions without access to professional help 

Kenya’s Mental Health Act 2022 marked genuine legislative progress, establishing a Mental Health Tribunal and broadening the mandate for community-based care. The Kenya Mental Health Action Plan 2021 to 2025 acknowledges a treatment gap leaving the majority of people with mental health conditions without access to any professional support, and a survey by the Africa Mental Health Research and Training Foundation found that fewer than one in ten Kenyans with diagnosable conditions had accessed care. For childhood psychiatric conditions specifically, budget lines remain thin relative to documented need, and implementation of the 2022 Act has been uneven. 

The conduct disorder ranking is therefore a convergence of two problems: a high burden of a condition associated with childhood adversity, and a near-absence of the clinical infrastructure needed to identify and treat it. 

Across sub-Saharan Africa, the documented burden of mental illness is shaped as much by the absence of diagnostic infrastructure as by genuine psychiatric need. The WHO Mental Health Atlas records fewer than one mental health worker per 100,000 population across the African region on average, against more than 70 per 100,000 in high-income countries. Where clinicians do not exist, diagnoses do not accumulate, and where diagnoses do not accumulate, data does not reflect the true scale of illness. 

For anxiety and depressive disorders, the figures for African countries almost certainly under-represent the actual burden. Economic precarity, food insecurity, displacement and conflict-related trauma are established risk factors for both conditions and are highly prevalent across the region. Yet African nations appear rarely among the fifteen most burdened countries for either, while Western European and Latin American nations with mature diagnostic infrastructure feature prominently. The data gap is not a gap in mental illness; it is a gap in the capacity to measure and record it. 

For autism spectrum disorder, Uganda and Ethiopia both appear among the fifteen most affected countries globally, at rates near 800 per 100,000, partly explained by young population age structures and increased surveillance activity, though access to diagnosis and specialist care across the region remains severely limited. 

Covid-19 worsened mental health conditions besides armed conflict, urbanisation, widening inequality  

Conduct disorder is the condition where this disproportionate burden is most clearly visible and least contestable as an artefact of reporting. Nigeria records the world’s highest national prevalence at 891 per 100,000, and the top 15 most affected countries are overwhelmingly African. 

The WHO’s Comprehensive Mental Health Action Plan 2013 to 2030 set targets for expanding community-based services and closing the treatment gap, but progress across African member states has been slower than in any other WHO region, with mental health spending remaining well below the recommended floor of five per cent of total health budgets in most countries. 

By 2023, an estimated 1.17 billion people worldwide were living with at least one mental health condition, at a combined prevalence rate of 14,526 per 100,000, a 27.6 per cent increase since 2017. This is accompanied by a disability toll of 171.3 million disability-adjusted life years, up 28.9 per cent over the same period, while the DALY rate per 100,000 rose 21.3 per cent, confirming a genuine worsening of burden beyond what population growth alone would explain. 

The WHO estimates mental health conditions affect about one in eight people globally, contributing 13 per cent of all DALYs across noncommunicable diseases. The acceleration from 2019 onwards points to the Covid-19 pandemic and its prolonged aftermath as a significant factor, though drivers including armed conflict, urbanisation and widening inequality predate the pandemic. 

India carries the largest absolute burden, with 212.2 million cases and 30.4 million DALYs in 2023, approximately 18 per cent of the global total, followed by China with roughly 190 million cases and around 25 million DALYs, then the United States, Brazil and Nigeria. By DALY rate per 100,000, which adjusts for population size, the Netherlands leads at 3,620, followed by the United Kingdom, Portugal and Iran, a list crossing income levels, geopolitical contexts and welfare systems. 

Eating disorders carry some of the highest fatality rates of any psychiatric condition 

Anxiety disorders are the largest contributor to global mental health burden by prevalence, affecting an estimated 469.8 million people at a rate of 5,825 per 100,000, up 52.3 per cent since 2017, the fastest rate of change of all ten conditions, generating 55.4 million DALYs. Portugal records the highest national prevalence at 13,291 per 100,000, followed by Brazil and Iran. High-burden countries concentrate in Western Europe, Latin America and Oceania, reflecting genuine epidemiology alongside stronger diagnostic infrastructure, while low- and middle-income populations face substantial stressors but lack the capacity to formally record prevalence. 

Depressive disorders affected 322.2 million people at a rate of 3,995 per 100,000, up 20.6 per cent since 2017. The Syrian Arab Republic records the highest national prevalence at 8,238 per 100,000, inseparable from over a decade of civil conflict and mass displacement, followed by Ukraine and the United Kingdom. Depression generated 56.0 million DALYs, the largest single share of total mental health disability, above even anxiety disorders despite the latter’s higher prevalence. Together, anxiety and depression account for approximately 111 million DALYs annually, over 64 per cent of the total burden of 171.3 million. 

Schizophrenia affects 26.9 million people at a global rate of 333 per 100,000, generating 17.0 million DALYs, the third largest share of disability. The UAE leads at 532 per 100,000, followed by Japan. The rate has risen 1.9 per cent since 2017, and the WHO names it a priority condition given how restricted access to antipsychotic treatment remains in low- and middle-income countries. 

Autism spectrum disorders affected 52.3 million people at 648 per 100,000, up 3.3 per cent since 2017, with 9.8 million DALYs. Brunei Darussalam leads at 1,651 per 100,000. The upward trend reflects broadened diagnostic criteria and improved awareness. 

ADHD shows the clearest downward movement, falling 1.7 per cent since 2017 to 1,070 per 100,000, covering 86.3 million people and 3.7 million DALYs. Haiti records the highest rate at 2,738 per 100,000. The decline may reflect improved diagnostic differentiation rather than a genuine fall in prevalence. 

Bipolar disorder affects 35.7 million people at 443 per 100,000, with 7.6 million DALYs, up 1.8 per cent since 2017. New Zealand leads at 1,071 per 100,000. 

Eating disorders affect 18.1 million people at 224 per 100,000, with 3.8 million DALYs, up 0.9 per cent since 2017. Australia leads at 952 per 100,000. Despite low global caseloads, eating disorders carry some of the highest fatality rates of any psychiatric condition, with anorexia nervosa associated with a mortality rate of between five and ten per cent over a decade, according to The Lancet Psychiatry. 

WHO called for increased mental health spending, expand community-based services, narrow treatment gap 

Developmental intellectual disability is one of two conditions in decline, falling 4.8 per cent since 2017 to 853 per 100,000, covering 68.8 million people and 3.6 million DALYs. India leads at 1,692 per 100,000. The decline likely reflects expanded immunisation, improved obstetric care and iodine supplementation, though concentration in South and Central Asia shows much of the preventable fraction remains unaddressed. 

Other mental disorders account for 128.4 million cases at 1,592 per 100,000, up 3.0 per cent since 2017, generating 9.4 million DALYs. The UAE leads at 2,325 per 100,000. 

The WHO’s Mental Health Action Plan 2013 to 2030 called for governments to increase mental health spending, expand community-based services and close the treatment gap. Global cases crossed one billion during the period this data covers, and the DALY burden grew by nearly 29 per cent. In low-income countries, more than 75 per cent of people with serious mental illness receive no treatment, according to the 2022 WHO World Mental Health Report. 

For Kenya, ranking sixth globally for conduct disorder burden, with a mental health workforce that cannot match documented need, and a treatment gap the government’s own action plan acknowledges, the country faces a clear obligation to translate legislative advances into funded, staffed and monitored services for children and adolescents. 

Sources: WHO World Mental Health Report 2022, WHO Mental Health Atlas, The Lancet Psychiatry, the Africa Mental Health Research and Training Foundation, the Kenya Mental Health Act 2022, and the Kenya Mental Health Action Plan 2021 to 2025. 

Data analytics & visualisation: Stanley Njihia     

Text: Yvonne Kawira