Related Experiment Video
Updated: Jul 19, 2026

10:08
Surveying Low-Cost Methods to Measure Lifespan and Healthspan in Caenorhabditis elegans
Published on: May 18, 2022
Genes, ageing and longevity in humans: problems, advantages and perspectives
S Salvioli1, F Olivieri, F Marchegiani
1Department of Experimental Pathology, University of Bologna, Bologna, Italy.
Free Radical Research
|November 9, 2006
Summary
Genetics significantly influences longevity, with centenarian studies revealing potential "longevity genes." Environmental interactions cause discrepancies, necessitating large-scale studies for complex human longevity genetics.
Area of Science:
- Genetics
- Gerontology
- Epidemiology
Background:
- Epidemiological data suggest a strong genetic influence on human longevity.
- Centenarians represent successful aging and are key subjects for studying longevity genetics.
Purpose of the Study:
- To review genetic associations with longevity, focusing on nuclear and mitochondrial genes.
- To compare findings from Italian centenarian studies with international research.
Main Methods:
- Review of existing literature on genetic variants and longevity.
- Focus on studies involving centenarians, particularly from Italy.
Main Results:
- Several putative "longevity genes" have been identified through centenarian studies.
- Discrepancies in findings exist, potentially due to population-specific gene-environment interactions.
Conclusions:
- While genetic factors are important, gene-environment interactions complicate the study of longevity.
- Large-scale, high-throughput studies are needed to advance understanding of the complex genetics of human longevity.
Related Concept Videos
Aging
Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
The Effect of Aging on Tissues
Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...
Mitochondria
Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...
Longitudinal Research
Sometimes we want to see how people change over time, as in studies of human development and lifespan. When we test the same group of individuals repeatedly over an extended period of time, we are conducting longitudinal research. Longitudinal research is a research design in which data-gathering is administered repeatedly over an extended period of time. For example, we may survey a group of individuals about their dietary habits at age 20, retest them a decade later at age 30, and then again...
Development of Human Microbiota
The human microbiota begins developing at birth and undergoes continual change as we age. Infancy marks a critical period of microbial sensitivity, offering a “window of opportunity” during which beneficial microbes help mature the immune system. By age three, children typically develop a more stable and diverse microbial community. Newborns acquire microbes from their immediate environment; vaginal delivery favors maternal vaginal microbes, while cesarean births favor microbes from the skin...
Telomeres and Telomerase
In eukaryotic DNA replication, a single-stranded DNA fragment remains at the end of a chromosome after the removal of the final primer. This section of DNA cannot be replicated in the same manner as the rest of the strand because there is no 3’ end to which the newly synthesized DNA can attach. This non-replicated fragment results in gradual loss of the chromosomal DNA during each cell duplication. Additionally, it can induce a DNA damage response by enzymes that recognize single-stranded DNA.
