Science is evolving every day and in the news is the method that researchers have developed to assess the 'intrinsic capacity'. This is a measure of mental and physical function which are crucial for healthy aging. How can it be achieved? Now it is simple. Just with a single drop of blood or saliva. The new test looks at DNA methylation, which could help predict a person's overall risk of death and even track how they are aging. The World Health Organization (WHO) defines it as intrinsic capacity. This refers to "all the physical and mental capacities that a person can draw on and includes their ability to walk, think, see, hear, and remember". It is basically the sum of a person's mental and physical capacities. Why Does It Matter?IF reports are to be believed, this could play a big role in helping people to live a healthier and longer life. How? One can live through a more personalized care. It will also offer a more accessible way to support healthy aging. It can make it easier for people to access care. Cellular Aging - What Your Blood And Saliva Samples RevealThrough the blood and saliva samples, researchers are able to collect data on DNA methylation. This is a process that activates or deactivates genes. Due to developmental mutations, environmental factors, and abnormal methylation patterns, the DNA methylation can be subjected to changes. This information is then used to construct an epigenetic predictor of intrinsic capacity (IC). In the next step it is evaluated between IC clock and mortality. The blood test highlights a shift towards personalized healthcare, where interventions can be tailored based on an individual's biological age and the rate of aging. A breakthrough in blood testing now enables the identification of a person's biological age, marking a major shift in the way healthcare is delivered. Instead of using chronological age as a reference, this approach focuses on how the body is actually aging. By spotting early signs of decline, doctors can offer preventive care that delays the onset of age-related conditions—ultimately improving both life expectancy and quality of life.How to Age HealthilyTo support healthier aging, researchers have outlined some essential lifestyle practices. Here's what they suggest:Adopt a nutrient-rich dietOpt for eating patterns like the MIND or Mediterranean diets. These emphasize fruits, vegetables, whole grains, legumes, nuts, and healthy fats (like olive oil). Such diets are linked to reduced inflammation, better heart health, and even slower cognitive decline.Stay physically activeEngage in regular exercises like aerobic workouts (e.g., walking, swimming), strength training (using weights or resistance bands), and balance-focused routines (like yoga or tai chi). These activities help maintain muscle mass, bone strength, and mobility as you age.Stimulate your brainKeep your mind sharp with activities that challenge you intellectually—puzzles, reading, learning a new language, or playing strategy games. Mental stimulation supports cognitive health and may lower the risk of dementia.Control stress and manage chronic illnessesLong-term stress and unmanaged health conditions (like diabetes or high blood pressure) accelerate aging. Prioritize regular medical checkups, medication adherence, mindfulness practices, and emotional well-being to prevent complications and maintain vitality.Keep Your Connections IntactIt is important that you continue to socialize and meet people. This will help your cognitive skills to keep sharpening.