World Brain Tumour Day: Can your lifestyle really influence brain health and tumour risk?

The human brain controls every thought, memory, movement, and emotion. Yet most people rarely think about brain health until something goes wrong.

World Brain Tumour Day serves as a reminder that while heart health, diabetes, and cancer prevention often dominate public conversations, neurological health deserves equal attention. Brain tumours remain among the most complex medical conditions because, unlike many other cancers, their exact causes are often difficult to pinpoint.





A brain tumour occurs when abnormal cells grow within the brain or nearby tissues. Some tumours are benign and grow slowly, while others are malignant and can spread rapidly. Symptoms can vary widely, ranging from persistent headaches and seizures to changes in vision, speech, memory, or personality.

The challenge is that many brain tumours develop in people who have no obvious risk factors. This raises a common question: can lifestyle choices make any difference?

According to Dr Aravind Badiger, Technical Director, BDR Pharmaceuticals, lifestyle may not directly determine whether a person develops a brain tumour, but it can play an important role in maintaining overall brain health.

"One common question asked by patients and caregivers is whether lifestyle influences brain health and the development of brain tumours. Though the exact cause of most brain tumours continues to be unknown, growing scientific evidence suggests that having a healthy brain through a good lifestyle can significantly reduce the risk factors that cause brain tumours."

What science knows about brain tumour risk, and what it doesn't

One of the biggest misconceptions surrounding brain tumours is that a specific food, gadget, or daily habit is directly responsible for causing them.

Current scientific evidence paints a more complicated picture.

According to the US National Cancer Institute, the strongest established risk factor for certain brain tumours is exposure to high doses of ionising radiation, often from previous medical treatments involving radiation. Certain inherited genetic syndromes can also increase risk. Increasing age is another factor associated with some tumour types.

Similarly, extensive research conducted by the World Health Organization's International Agency for Research on Cancer (IARC) has found that evidence linking mobile phone use to brain tumours remains inconclusive and continues to be studied.

This uncertainty can be frustrating for patients and families searching for clear answers. However, experts caution against oversimplifying a disease that is influenced by multiple biological and genetic factors.

As Dr Badiger explained, "While certain cancers like lung cancer have strong risk factors including smoking habits, there is no clear relationship established between lifestyle and the development of brain tumours."

That distinction is important. Lifestyle may not directly prevent brain tumours, but it can strengthen the body's resilience, support brain function, and reduce the burden of other diseases that affect neurological health.

Feeding the brain: Why everyday food choices matter

The brain consumes nearly 20 percent of the body's energy despite accounting for only a small fraction of total body weight.

What goes onto the plate every day can influence how efficiently the brain performs its tasks.

Research funded by the NIH suggests that diets rich in fruits, vegetables, whole grains, healthy fats, nuts, legumes, and lean proteins are associated with better cognitive health and may help protect against age-related neurological decline.

Dr Badiger noted, "Having a healthy and balanced diet ensures the intake of foods containing key nutrients necessary for brain health. Fruits, vegetables, grains, nuts, and proteins have antioxidants that protect against oxidative stress and other chronic conditions."

What makes this advice particularly relevant is that brain health is not simply about avoiding disease. It is about preserving memory, concentration, emotional balance, and cognitive performance over decades.

The often overlooked power of sleep, exercise and stress control

Modern lifestyles often celebrate busyness while treating rest as a luxury. Neuroscientists would argue the opposite.

Sleep is one of the brain's most important maintenance processes. During sleep, the brain removes metabolic waste, consolidates memories, and repairs neural pathways.

Dr Badiger explained, "The process of rest and recuperation is vital for the proper functioning of your brain since it facilitates repair, brain restoration, and removal of waste. Sleep deprivation could adversely affect your cognitive ability in the future."

Exercise also plays a significant role. Physical activity increases blood flow to the brain, improves cardiovascular health, and supports the growth of new neural connections.

Stress, meanwhile, has emerged as a major concern in today's always-connected world.

Long-term stress can affect memory, concentration, mood, and sleep quality. Managing stress does not necessarily require dramatic lifestyle changes. Regular walks, meditation, hobbies, meaningful conversations, and maintaining social relationships can all help protect mental well-being.

As Dr Badiger noted, "Stress impacts your health both mentally and physically. You can manage it through meditation, engaging in exercise, and maintaining social connections."

Prevention is uncertain, awareness is essential

Perhaps the most important message on World Brain Tumour Day is that good health habits should never replace medical attention.

A healthy lifestyle may support brain function, but it does not make a person immune to neurological disease.

Persistent headaches, unexplained seizures, blurred vision, memory problems, speech difficulties, or sudden personality changes should never be dismissed as stress or ageing without proper evaluation.

Dr Badiger advised, "Despite living a healthy life, it is crucial for you to know all the symptoms that may point to a neurological condition. In case of continuous headaches, seizures, blurring of vision, memory loss or speech problems, consult a medical expert immediately."

Scientists around the world continue to investigate the causes of brain tumours. Until clearer answers emerge, awareness remains one of the most valuable tools available.

The reality is both reassuring and humbling. No lifestyle habit can guarantee protection from brain tumours. Yet every healthy meal, every night of quality sleep, every walk, and every effort to manage stress contributes to a stronger, healthier brain capable of supporting overall well-being throughout life.

Medical experts consulted
This article includes expert inputs shared with TOI Health by:

Dr Aravind Badiger, Technical Director, BDR Pharmaceuticals.

Inputs were used to explore whether everyday lifestyle habits such as diet, sleep, exercise, stress management, and avoidance of harmful substances can support brain health and potentially influence factors associated with brain tumour risk, while highlighting what current scientific evidence reveals about prevention and early awareness.