A new study suggests that people do not need dramatic lifestyle overhauls to improve health and possibly extend life. Instead, small changes across sleep, exercise and diet may have a meaningful combined effect. The article was based on research using UK Biobank data and examined 59,078 participants, making it one of the broader studies to look at sleep, physical activity and nutrition together in relation to lifespan and healthy lifespan.
The researchers wanted to identify not only which habits are linked to better health, but also the minimum change needed to see a measurable benefit. They found that adding five minutes of sleep a night, doing less than two extra minutes of moderate to vigorous exercise a day, and making a small dietary improvement, such as an extra half-serving of vegetables or more whole grains, were associated with about one additional year of life on average. They called the three areas SPAN, sleep, physical activity and nutrition, and said the biggest gains came when all three improved together.
The study found that lifestyle habits work as a system: better sleep supports energy and exercise, exercise improves sleep and metabolism, and healthy eating helps both and supports healthy weight and metabolic balance. If only one area is changed, a larger shift is needed to make a major difference. For example, adding one year of life through sleep alone would require about 25 extra minutes of sleep a day, but combining small improvements across all three areas reduced that need. The best overall group slept 7.2 to 8 hours a night, exercised more than 42 minutes daily and ate a high-quality diet, and was linked to more than nine extra years of life and almost 9.5 additional years without major chronic disease.
The authors defined healthy lifespan as years lived without major illnesses such as heart and blood vessel disease, cancer, type 2 diabetes, chronic obstructive pulmonary disease and dementia. Exercise emerged as the strongest factor, with about 50 minutes a day of moderate to vigorous activity tied to the largest gain in lifespan and about 75 minutes a day linked to the biggest increase in chronic-disease-free years. Sleep also mattered, with the ideal range around 7.5 to 8 hours a night, while sleeping too little or too much was less beneficial. Moving from five hours of sleep to about eight hours was associated with roughly four extra healthy years.
Dr. Walid Badir, an internal medicine specialist and head of Meuhedet’s emergency medicine unit in Tel Aviv, said the key message is that people do not need a marathon or an extreme diet. He said small choices, such as walking a few extra minutes, adding vegetables to meals and keeping a regular bedtime, are easier to sustain and can reduce the risk of chronic disease over time. The researchers recommended starting with modest, practical steps, like going to bed five to ten minutes earlier, walking briskly a few more minutes a day, eating a little more vegetables, whole grains and fish, and cutting back on processed food and sugary drinks.
