In the twilight of his presidency, Joe Biden, the oldest president in U.S. history, faces increasing scrutiny over his health and capacity to lead, as allegations of physical and cognitive decline circulate. With President-elect Donald Trump preparing to assume office after his November victory over Kamala Harris, concerns about Biden’s well-being and the nation’s security during the transition have reached a fever pitch.

The discourse is fueled by reports from sources and health experts, some of whom speculate that Biden, 82, may be suffering from advanced dementia or even Alzheimer’s disease. The speculation follows a series of public incidents, including moments of disorientation, memory lapses, and physical frailty during international appearances, notably at the G20 summit in Brazil and the Asia-Pacific Economic Cooperation forum in Peru. At the latter, Biden appeared frail and was absent from key moments, including a world leaders’ group photo.

White House insiders and critics alike point to the president’s struggles, such as confusing past events, including the death of his son Beau Biden, and appearing lost on the White House grounds. Retired U.S. Army Maj. Gen. Paul Vallely warns of heightened risks during this transition period, describing Biden’s condition as a “dangerous time for America.”

Health professionals consulted by GLOBE highlight symptoms often associated with mid- to late-stage dementia, including a stiff gait, mood swings, and memory issues. Dr. Holly Schiff, a Connecticut-based psychologist, stated, “Biden’s cognitive abilities seem to be deteriorating at an alarming speed.” However, Schiff and other quoted experts have not treated Biden directly.

The president’s health history further adds to the speculation. Biden suffered two life-threatening brain aneurysms in the 1980s and has been diagnosed with several chronic conditions, including atrial fibrillation, peripheral neuropathy, and degenerative spinal arthritis. Additionally, he has undergone surgeries for prostate issues, gallbladder removal, and sinus complications, among others. In 2019, Biden’s physician confirmed treatments for high cholesterol and AFib, conditions that increase the risks of stroke and dementia.

Biden’s allies, including First Lady Jill Biden, have consistently refuted claims of his incapacity. Jill Biden labeled such assertions as “ridiculous,” while the president’s medical evaluations have repeatedly declared him “fit for duty.” Nevertheless, reports of Biden’s frustrations and alleged outbursts behind closed doors have fueled the narrative, with 40% of White House staff reportedly quitting in 2021.

Compounding the controversy is Biden’s apparent retreat from public engagement. He last addressed a reporter’s question before Trump’s decisive election victory. Critics argue that key policy decisions—such as authorizing Ukraine to use U.S.-made missiles against Russian targets—are being made by staffers or guided by Jill Biden. Vallely asserts, “The president-elect has all but assumed the powers of the presidency prior to his inauguration.”

The transition has spotlighted Biden’s health as a potential national security issue, with skeptics questioning his ability to effectively govern. The debate over Biden’s condition comes at a time when the U.S. faces significant challenges, from international tensions to domestic policy concerns.

As President-elect Trump prepares to take office, his incoming administration has emphasized a focus on efficiency and leadership. However, the outgoing administration's perceived instability has cast a shadow over the final days of Biden’s presidency, raising questions about how history will judge his tenure.