Dr Daniel Belsky, an epidemiologist at Columbia University, New York (my Alma Mater), has coined the term ‘geroscience’, meaning geriatric, or related to age. Here, he has devised a novel blood test which determines the pace at which a person is aging. His group has devised a method which studies the formation of methyl groups through an enzyme in the DNA of senior citizens and finds that this methylation is sensitive to aging. This is often referred to as ‘gerozyme’.
Several groups are working on drugs and other related methods to modulate the gerozyme, and how these efforts affect his/her aging. One group has suggested the drug called metformin is a tool to target aging (Cell Metabolism, vol.23, June 14, 2016). Another group has shown that if we inhibit the enzyme TORC1, it will enhance immunity and reduce infection in the elderly. More recently, Mannick et al, in a paper in Nature Aging (2023) have reviewed the effects of the drug rapamycin on the longevity and survival of animal models of human diseases, and how we may make the drug’s inhibitors a part of the standard of care for diseases of aging. Dr Belsky’s group had also studied the levels of DNA methylation in people across the socio-economical background (poor-rich, rural-urban) and finds that socio-economic disadvantage has a role to play.
The Columbia Aging Centre has found that a balanced diet supports brain health by reducing inflammation, promotes proper blood flow by supplying essential nutrients which aid cognitive function. And the website healthline.com elaborates on this and states that healthy sources of proteins, healthy fats, and foods rich in antioxidants, such as healthy fats, vegetables, foods rich in oils, and plenty of fruits help in supporting healthy aging. This is of particular value to us in India, since the number of people above the age of 60 years is about 10 crores (out of a total population of 143 crores). Healthline.com suggests that proteins (animal and vegetable), nutritive grains (wheat, rice, ragi, bajra), oils, fruits and soft drinks help in healthy aging. These are easily available, both for meat eaters and vegetarians.
