Scientists have found that certain substances in the human body are essential for preventing and delaying the aging process. These substances include antioxidants, vitamins, minerals and fatty acids. Many of us have inadequate amounts of these substances and are at risk of developing aging-related diseases. Therefore, it is essential to take these substances in optimal amounts to prevent or decelerate the aging process. However, taking extra antioxidants alone is unlikely to increase your life span. This is one of the reasons why most scientists are hesitant to approve of anti-aging supplements.
Although the free radical theory of aging was first introduced in the 1950s, science has since discovered that aging is caused by a wide range of complex processes. Some of these processes include protein accumulation, epigenetic dysregulation, telomere attrition, mitochondrial dysfunction and cross-links.
Antioxidants can help your body fight free radicals that are believed to cause the aging process. Free radicals can cause oxidative stress, cellular damage, and programmed cell death. While your body naturally produces antioxidant molecules, it is important to take antioxidant supplements and other treatments to facilitate the scavenging of these harmful radicals. Vitamin C is an antioxidant that has been shown to combat the signs of aging. Retinol can be incorporated into topical creams and lotions, which improve the absorption of this vitamin.
In addition to anti-ageing supplements, researchers have found that certain foods contain nutrients that help reverse the aging process. A study published in the journal Aging found that consuming leafy greens could reduce the biological age of middle-aged participants. Researchers are now beginning to apply these findings to foods.
Scientists have found that calorie restriction and fasting have anti-aging effects. Some of these nutrient-restricted diets increase life span by as much as 40%. These results were confirmed in mice and rats. Moreover, calorie-restricted diets also improve the health of many species.
Researchers have also found that antioxidants such as resveratrol are beneficial to the human body. They promote healthy cell regeneration and repair, and even help protect against the development of diabetes and heart disease. Moreover, these nutrients promote telomere length, which is a key component in our cells.
Vitamin D is an important antioxidant but long-term intakes of vitamin D are associated with several risks. Experts suggest that humans should consume only a small amount of vitamin D every day to avoid adverse effects. However, serum 25-OH-D levels should remain between 200 and 500 ng/mL for optimal health. Other nutrients that have antioxidant effects include polyphenols and flavonoids.