But would such ageotype interventions translate into less disease and fewer early deaths? The science isn't far enough along to show real-life impacts. However, a few study participants were able to decrease or slow aging markers, at least temporarily, when they made lifestyle changes. It's unclear what effects that could have in the long term. Other fortunate participants showed a slower-than-average aging rate throughout the study period, though researchers aren't yet able to understand what sets those people apart from others.
Technically, people all start aging before they're even born; every stage of development is part of the process. And many factors play roles, including genetics and the environment. Download the NBC News app for breaking news.
But the research adds to the growing body of science behind not only how we age, but also why, and potential methods of intervention.
Liotta explains that if you have thicker skin, the signs of aging are less noticeable. But Dr. Liotta confirms that genetically, those with more melanin-rich skin such as Hispanic, Mediterranean, Asian-American, and African-American people are pre-disposed to have thicker skin, resulting in wrinkles that look less prominent. Ever wonder why wrinkles are more noticeable on your forehead or under the eyes?
Plump skin actually has positive connotations, attributed to youth. Liotta, your genetics can determine whether you have higher fat content in deeper areas of the skin.
Your skin tone and sunburn-likelihood affects how you age. Melanin, the pigment that gives your skin and hair its color, affects aging. It says that an organism begins aging after they have reached their peak of reproduction and have passed down adaptive traits. Another theory is that biochemical reactions cause aging.
These reactions occur naturally and continuously throughout life. In recent decades, life expectancy around the world has increased. This is due many factors, including:. In most parts of the world, women live longer than men. This is due to several biological, social, and environmental factors.
Women, on average, have more estrogen than men. Estrogen is the female sex hormone. In contrast, the male sex hormone testosterone may suppress the immune system. Men typically have more of this hormone. You can do this by following healthy lifestyle habits. Aging is likely caused by a combination of reasons.
Other theories say that aging is due to genetic, evolution, or biochemical reactions. Aging is normal, but following a healthy lifestyle may help you live longer. Habits like eating well, exercising regularly, and wearing sunscreen can reduce your risk of disease and improve your quality of life. Cartilage cushions joints and helps them work smoothly. It naturally degenerates with age, which may lead to osteoarthritis. Nonsense, say scientists at Stanford University School of Medicine.
These changes can be measured when the individual is healthy and relatively young, the researchers report, perhaps helping physicians to pinpoint the most important thing to target to extend healthy life.
Call it personalized medicine for aging. Crucially, the molecular markers of aging do not necessarily cause clinical symptoms. Everyone was basically healthy. Cardio-agers, for instance, might benefit from tight cholesterol control, periodic EEGs, and screening for atrial fibrillation. Immune agers might benefit from diets and exercise to reduce inflammation.
Then again, they might not. The short follow-up and small sample size— people—gave other experts pause. Through blood and saliva and urine tests, genetic analyses, microbiome inspections of their nose and gut, and more, the scientists measured 10, genes, blood proteins, metabolites, and 6, microbes, among other things, and found they clustered into four ageotypes: liver, kidney, metabolic, and immune.
All told, the study generated 18 million data points. While that sounds impressive, it raises the risk that some markers seem to be part of one or another ageotype just by chance.
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