Joe Biden, the 46th President of the United States, has been a figure of significant political influence for decades. As the oldest person to assume the U.S. presidency, questions and concerns about his mental and cognitive health have emerged. This article examines the discussions surrounding Biden’s mental health, the signs and symptoms of degenerative mental health issues, and the scientific perspective on assessing cognitive decline in older adults.

Joe Biden has had a long and distinguished career in public service, serving as a U.S. Senator for 36 years and as Vice President for eight years under President Barack Obama. Born on November 20, 1942, Biden was 78 years old when he was inaugurated as President in January 2021.

Given Biden’s age, public speculation about his cognitive health has been a persistent issue, fuelled by his verbal slip-ups and moments of apparent confusion during speeches and public appearances. These concerns have been heightened following the 2024 Presidential debate with Donald Trump. Critics and some media outlets have raised concerns about whether these incidents could indicate a more serious underlying condition, such as a degenerative mental health disorder (Salzman, 2021).

Degenerative mental health issues encompass various conditions that affect cognitive function, including:

• Mild Cognitive Impairment (MCI): A condition where cognitive decline is greater than expected for a person’s age but does not interfere significantly with daily life (Petersen, 2016).
• Alzheimer’s Disease: The most common form of dementia, characterised by progressive memory loss, confusion, and behavioural changes (Alzheimer’s Association, 2020).
• Vascular Dementia: Cognitive decline resulting from reduced blood flow to the brain, often following a stroke or other vascular issues (O’Brien & Thomas, 2015).
• Lewy Body Dementia: Marked by the presence of abnormal protein deposits in the brain, leading to fluctuating cognitive function, visual hallucinations, and motor symptoms (McKeith et al., 2017).

Common symptoms of cognitive decline include memory loss, difficulty concentrating, confusion, and changes in mood or behaviour. Diagnosis typically involves a combination of clinical assessments, cognitive tests, neuroimaging, and evaluations of daily functioning (Albert et al., 2011).

Joe Biden and his team have consistently maintained that he is in good health and fit for office. In December 2019, Biden released a health summary from his physician, Dr. Kevin O’Connor, who stated that Biden was “healthy, vigorous” and “fit to successfully execute the duties of the Presidency” (O’Connor, 2019).

While the health summary included details about Biden’s physical health, it did not provide extensive information about cognitive testing. Cognitive assessments, such as the Mini-Mental State Examination (MMSE) or the Montreal Cognitive Assessment (MoCA), are often used to evaluate cognitive function in older adults (Folstein et al., 1975; Nasreddine et al., 2005). However, there has been no public disclosure of specific cognitive test results for Biden.

Several medical experts have weighed in on the debate about Biden’s cognitive health. Dr. Sanjay Gupta, CNN’s chief medical correspondent, has suggested that while verbal slip-ups can be concerning, they are not uncommon among older adults and do not necessarily indicate dementia (Gupta, 2020). Other experts emphasise the importance of comprehensive evaluations to make any definitive conclusions about cognitive health (Burns & Morris, 2020).

The role of the President of the United States is extremely demanding, requiring sharp cognitive function, quick decision-making, and the ability to manage complex issues. Cognitive decline can impact these abilities and, consequently, the effectiveness of a leader (Van der Flier et al., 2018).

There have been historical instances where the cognitive health of a sitting president has come under scrutiny. For example, Ronald Reagan’s mental health became a topic of concern towards the end of his second term, and he was later diagnosed with Alzheimer’s disease in 1994 (Blumenthal, 1994).

Concerns about Joe Biden’s cognitive health highlight the broader issue of age and cognitive function in leadership roles. While public speculation continues, it is crucial to rely on comprehensive medical evaluations and expert opinions to assess cognitive health accurately. As Biden continues his presidency, monitoring his health remains essential to ensure he can effectively fulfil his duties.

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• O’Brien, J. T., & Thomas, A. (2015). Vascular dementia. The Lancet, 386(10004), 1698-1706.
• O’Connor, K. (2019). Health Summary of Joe Biden. Biden Campaign. Retrieved from https://www.documentcloud.org/documents/6562430-Joe-Biden-Health-Summary-2019.html
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