Last Updated on June 18, 2026 1:00 pm by INDIAN AWAAZ
By Dr. Gangi Reddy T K
For years, public health experts have repeated a phrase that once sounded exaggerated — “Sitting is the new smoking.” Today, growing scientific evidence suggests the warning deserves attention. Extended periods of physical inactivity are increasingly being linked to chronic illnesses that were once accepted as a natural part of ageing. Research now indicates that many of these health issues are not simply age-related but are strongly influenced by the way people live and move every day.
In India, this conversation has become increasingly urgent. Rapid urbanisation, desk-based work culture, longer screen exposure, and a decline in everyday physical movement have created lifestyles that are far more sedentary than those of previous generations. The consequences are becoming visible through rising health concerns across age groups, signalling that inactivity may be quietly accelerating the ageing process.
It Accelerates Cardiovascular Decline
Sitting for extended periods slows circulation, reduces the efficiency of the heart, and allows fatty acids to accumulate in the bloodstream. Studies have found that people who sit for more than eight hours a day face a significantly higher risk of heart disease, independent of whether they exercise at other times. The damage done by prolonged sitting is not fully undone by an hour at the gym. Movement needs to be distributed across the day, not concentrated into a single window.
It Disrupts Metabolic Function
Physical inactivity impairs the body’s ability to regulate blood sugar and process fat. Muscle contractions, even minor ones from walking or standing, play an active role in glucose metabolism. When muscles are inactive for hours at a stretch, insulin sensitivity drops. Over time, this contributes directly to the development of type 2 diabetes, a condition that is rising sharply among working-age Indians, including those in their thirties and forties.
It Weakens Muscles and Bones Faster Than Age Alone
Muscle mass begins declining from the mid-thirties onwards, a process called sarcopenia. A sedentary lifestyle greatly speeds this up. Without consistent weight-bearing activity, bones also tend to lose density faster, making them more likely to break and suffer osteoporosis sooner than predicted. Indians are already genetically predisposed to lower bone density compared to some other populations. A sedentary lifestyle compounds that risk considerably.
It Ages the Brain
The connection between physical movement and cognitive health is well established. When you exercise regularly, it boosts blood flow to your brain and promotes the formation of new synaptic connections. And when you have prolonged periods of inactivity they are linked to more rapid memory decline. You may also experience higher rates of depression and anxiety, and an increased risk of dementia later in life. The brain, like the body, needs movement to stay sharp.
It Compresses Healthy Years, Not Just Lifespan
This is perhaps the most important point. The concern with sedentary living is not only about dying earlier. It is about spending more years in poor health. Reduced mobility, chronic pain, metabolic conditions, and cognitive decline all tend to arrive sooner in people who have spent decades largely inactive. The goal of healthy ageing is not simply a longer life. It is a longer period of functioning well.
The Solution
The solution does not require dramatic intervention. Standing up every 45 minutes, walking during phone calls, choosing stairs over lifts, building a short evening walk into a daily routine. These are not fitness goals. They are basic maintenance for a body that was designed to move. India is ageing rapidly as a population. How well that ageing goes depends, in large part, on decisions being made right now, at desks and on sofas, every single day.
Dr. Gangi Reddy T K is Senior Consultant – Interventional Pulmonology, Lung Transplantation & Sleep Medicine, KIMS Hospitals, Mahadevapura, Bengaluru