Want to live longer? Neurologist recommends a simple exercise that can literally ‘increase’ brain size

Dr. Austin Perlmutter, a neurologist and well‑known brain‑health specialist recently revealed that a simple exercise can in fact, build new brain cells. Yes, that is true! Read on to know more…

Dr Perlmutter says that while exercise is one of the most powerful ways to build new brain cells, amidst that, walking is the clear winner. According to the doctor, taking walks can actually stimulate the formation of new neurons. This simple, free and no fuss activity, can bolster memory and decelerate the onset of cognitive decline. In an IG video, Dr Perlmutter laid out the data that demonstrate how walking, and other forms of movement, can reshape the brain in a new direction.

Fires up the brainDr. Perlmutter points to research showing that taking walks can actually kick‑start the birth of new brain cells, a process scientists call neurogenesis. Key areas of the brain involved in memory particularly the hippocampus, grow larger with regular physical activity. In a landmark trial involving adults those who logged a year of walking, ended up with roughly 2 % larger hippocampus size, than the participants who stuck to stretching alone; on the other hand, the stretch‑only group even experienced a slight shrinkage. This growth matters, because the hippocampus is crucial for both forming new memories, and pulling them back when we need them. Taking walks fortifies this brain area, helping it stay robust and fend off the impacts of aging and illnesses such as Alzheimer’s.

How walking helps

According to Dr. Perlmutter, getting your body moving sends a burst of signals to your brain urging it to stay sharp and alert. Those cues essentially tell your brain that you’re actively engaging with your surroundings, prompting neurons to stay healthy and tightly linked. Exercise also ramps up blood flow and oxygen delivery to brain tissue improving brain activity. Not only that, constant movement nudges muscles to release a mix of signaling molecules called myokines, among which the well‑known brain‑derived neurotrophic factor (BDNF) plays a role. BDNF plays the role of a fertiliser for brain cells, nudging the creation of neurons, while bolstering the survival and performance of the ones already present.

Major boost for brain health

Taking a stroll is one of the best ways to get the heart pumping, and the blood flowing, and it doesn't demand any fancy equipment or a gym card. According to Dr. Perlmutter, a quick dose of movement, like a regular walk, gives a boost to every system that fuels the brain-from immunity and metabolism, to neuroplasticity (the brain’s ability to adapt and rewire). Clocking in a handful of walking sessions each week, can actually increase brain matters that govern memory, cognition and emotional regulation. The best part is that walking is accessible to all, without any limitations.

Reduces risk of cognitive decline

According to research highlighted by Dr. Perlmutter, taking a stroll does more than grow new cells - it also appears to slow the slide of cognitive decline. Larger brain volumes and elevated BDNF levels, have been linked to a risk of Alzheimer’s disease and other dementias. A range of studies shows that people who make walks a habit, tend to preserve memory, keener attention and more agile problem‑solving abilities, as they age. Those benefits in turn, help them stay independent longer and enjoy a steady quality of life. A steady walking routine pushes back on inflammation and other dangerous mechanisms that wear down tissue, making it a crucial non‑pharmacological approach, to brain protection.

How to walk for brain health

Dr. Perlmutter recommends a consistent routine: walk for at least thirty minutes a day most days of the week. You don’t need to be an athlete, he says: just move enough to raise your heart rate and breathe a little heavier (the rule of thumb is that you should be able to talk, but not sing) If thirty minutes feels challenging at first, break it into 2 sessions of 15 minutes each. Walking outside in a park, or garden also adds benefits like soaking up sunlight for vitamin D, and giving the mind a relaxing break. Pick routes that feel safe, so you can really enjoy your walk, and make sure that you wear the right shoes, since the wrong ones might leave you with pain, or worse, an injury. The trick is staying consistent, because that way your brain keeps soaking up those growth signals day after day.