Published October 27, 2026
My teenage son recently told our family that all his friends “knew” smelling burnt toast is a sign of having a stroke. He told them he didn’t think that was true because his mother is a stroke specialist—who loves to talk about her work—and she’d never mentioned it. On World Stroke Day (October 29) I’d like to provide the facts about stroke.
A stroke happens when blood flow to part of the brain is interrupted. Blood carries oxygen, so when that flow is blocked, brain cells don’t get what they need and stop working. As a result, the brain quickly loses the ability to perform certain functions. For example, if the area that controls speech is affected, a person may suddenly have trouble talking. If an area that controls movement is affected, a person may feel weak or numb on one side of the body. This happens on just one side because each side of the brain controls the opposite side of the body. Stroke specialists at Yale New Haven Health recognize these patterns and use them to quickly diagnose and treat stroke.
An easy ways to remember stroke symptoms is the mnemonic FAST:
F is for face: ask the person to smile and check whether one side droops.
A is for arm (and leg): see if they can raise each arm and leg; weakness or numbness on one side is a warning sign.
S is for speech: listen for slurred speech, trouble speaking, or difficulty understanding.
T is for time: if any of these signs appear, call 9-1-1 immediately.
Time matters because brain cells begin to die quickly when deprived of oxygen. However there is a window of opportunity when the brain isn’t working because of the lack of oxygen, but the brain cells haven’t died, and specialists can restore blood flow and limit long-term injury. The faster someone receives treatment, the better their chances of recovery. Minutes matter.
This brings us back to “burnt toast.” Stroke symptoms typically involve losing a function such as strength, sensation or speech, not gaining a new sensation like smelling something unusual. While certain neurological conditions, like seizures, can sometimes cause unusual sensory experiences, they are not a classic sign of stroke. However, if something seems off and you’re not sure what it is, it’s always safe to call for help. False alarms are far better than missing a real emergency.
There are some other common misconceptions about stroke worth mentioning: A stroke is not a heart attack. While both involve blood flow problems, a heart attack affects the heart while a stroke affects the brain. Symptoms and treatments are different - aspirin can help during a heart attack but may worsen some types of stroke, so medical evaluation is critical. Also, stroke isn’t just a condition of older adults. While it’s more common with age, it can occur at any age, even in children. and rates among younger adults are rising. Never dismiss symptoms based on age.
The encouraging news is that many strokes are preventable. Managing key risk factors, such as high blood pressure, high cholesterol, diabetes, smoking, lack of physical activity and certain heart conditions, can significantly reduce risk. Regular preventive health checkups are extremely important because some of these conditions don’t have noticeable symptoms. Even modest lifestyle changes make a difference; something as simple as walking a few times a week can help improve overall health and lower stroke risk.
Also important for everyone to know is that a stroke is treatable and even reversible, especially when caught early. In many cases, doctors can use clot-busting medications to reopen blocked arteries and restore blood flow to the brain. These treatments are highly time-sensitive, which is why rapid recognition and response are so critical. Acting quickly can mean the difference between a full recovery and long-term disability.
Advances in stroke care continue to improve outcomes. Today, many patients recover far better than they would have even ten or twenty years ago, and ongoing research is expanding treatment and recovery options even further. Rehabilitation therapies can also help people regain function, even months or years after a stroke.
Yale New Haven Health’s new Adams Neurosciences Center, which will open to patients in early 2027, will capitalize on our nationally recognized stroke program and create a true destination center and continue to bring best in class care to the region for stroke patients and others hospitalized with neurological conditions. So, while smelling burnt toast might make for an interesting story, knowing the real warning signs - and acting quickly - can save a life or prevent lasting disability.
