Dr Amir Khan Reveals 5 Surprising Triggers That Can Spike Your Blood Sugar — Even Without Eating
dr amir khan warns that blood sugar fluctuations often blamed on diet can also be driven by stress, sleep, physical activity, illness and hormonal shifts — five non-food triggers he says can raise glucose even when someone hasn’t eaten. The observation reframes simple notions of “what causes a spike” and asks clinicians and the public to look beyond the plate when interpreting blood glucose changes.
Why this matters right now
Blood glucose readings are routinely used to guide daily decisions and long-term care. When spikes occur, people commonly assume recent meals are to blame. dr amir khan’s message matters because misattribution can lead to misguided behavioural responses: blaming food alone overlooks stress responses, sleep disruption, exercise effects and illness-driven metabolic changes that temporarily raise glucose. That misreading can affect day-to-day choices and long-term risk framing.
Dr Amir Khan’s five non-food triggers
Drawing on an Instagram video he shared, Dr Amir Khan — a general physician working with NHS England, a resident doctor on ITV’s Lorraine and Good Morning Britain, and host of the No Appointment Necessary podcast — sets out five reasons blood sugar can spike beyond eating. He states plainly: “Did you know your blood sugar can spike even if you haven’t had a single bite to eat? Let me share five surprising things that can raise your blood sugar and why it might not always be a bad thing. ”
First, stress. dr amir khan explains that stress elevates cortisol, triggering the body’s fight-or-flight response and prompting the liver to release stored glucose into the bloodstream for quick energy. He notes a clear behavioural implication: chronic stress leads to repeated glucose surges, which is undesirable for long-term metabolic health.
Second, sleep. The physician highlights that a single bad night can increase insulin resistance so glucose lingers in the blood longer. He warns that chronic sleep deprivation can substantially raise the risk of type 2 diabetes even in people who otherwise try to eat well.
Third, exercise. dr amir khan points out that intense or resistance training can temporarily raise blood sugar because the body releases extra glucose to fuel muscles. He underscores that this transient rise does not equal harm: regular exercise ultimately improves insulin sensitivity and lowers average blood sugars over time.
Fourth, illness. The physician indicates that when the body is fighting infection it releases glucose to support immune activity — a natural metabolic response that increases circulating glucose during illness.
Fifth, hormonal changes. The overview notes that shifts in hormones can alter how the body regulates glucose, producing fluctuations independent of recent food intake.
Regional and global consequences
At population level, interpreting glucose spikes solely as dietary failure risks oversimplifying prevention messages and clinical advice. Public health guidance and clinician counseling that incorporate the five non-food triggers identified by dr amir khan could reduce stigma and improve self-management by aligning explanations with physiology: not every spike equals dietary indulgence, and some spikes reflect adaptive responses.
Clinically, recognizing these drivers matters for treatment decisions. For people monitoring glucose, understanding that temporary rises can come from stress, one night of poor sleep, intense exercise or infection may prevent unnecessary medication changes or alarm. Conversely, recognising patterns of repeated non-dietary spikes — for example chronic stress or persistent sleep loss — highlights targets for long-term intervention to reduce diabetes risk, consistent with the physician’s warning about chronic glucose exposure.
Expert perspective is embedded in the observations themselves. Dr Amir Khan frames temporary rises as sometimes expected and sometimes useful — exercise-fuelled glucose being one example — while cautioning that chronic patterns tied to stress or sleep deprivation carry risk. His comments direct attention to behavioural and systemic interventions beyond calorie counting.
How will clinicians, employers and individuals translate a broader understanding of glucose drivers into practical guidance, monitoring strategies and policy that reduce long-term metabolic risk while avoiding unnecessary alarm? The answer will determine whether the five non-food triggers highlighted by dr amir khan become part of routine glucose literacy or remain an underappreciated nuance in everyday care.
