The stability of our genome is a fundamental basis of cellular integrity. Over the course of life, DNA damage can arise from environmental factors, metabolic processes, or errors in repair mechanisms. In longevity research, genomic stability is therefore considered an important starting point for gaining a better understanding of aging processes at the cellular level.

Telomeres are protective structures at the ends of our chromosomes. They help preserve genetic information during cell division, but shorten over the course of life with each division.

In longevity research, telomeres are regarded as important markers of cellular replicative capacity and biological stress. Their length is influenced by both genetic factors and environmental and lifestyle factors.

Epigenetic changes influence how genes are read without altering the DNA sequence itself. They arise through chemical markers and structural adjustments that regulate the accessibility of the DNA.

Over the course of life, such patterns can change and thereby influence cell function, adaptability and biological regulation. In longevity research, epigenetic processes are therefore regarded as a key interface between genetics, environment and lifestyle.

Proteostasis describes the cell’s ability to produce, fold, and, when necessary, break down proteins correctly. This balance is important for ensuring that cellular structures and processes function reliably.

With increasing age, this quality-control system can become less efficient. As a result, damaged or misfolded proteins may accumulate. In longevity research, proteostasis is therefore regarded as a key factor in cellular organization, resilience, and functional stability.

Macroautophagy is a cellular recycling process in which damaged cell components are broken down and reused. It helps the cell maintain order and adapt to stress.

With increasing age, this process can become less efficient. In longevity research, autophagy is therefore regarded as an important mechanism for cellular cleansing, adaptability, and functional stability.

Nutrient sensing describes the body's ability to detect energy, nutrients and metabolic signals, and respond to them. This includes signalling pathways around insulin, growth, cell division and energy balance.

As we age, this regulation can become less precise. In longevity research, it is therefore regarded as an important interface between nutrition, metabolism, cell function and biological adaptability.

Mitochondria are central structures in cellular energy production. They provide ATP—the form of energy that powers many biological processes in the body.

With increasing age, mitochondrial efficiency can decline. In longevity research, mitochondria are therefore considered an important interface between energy metabolism, oxidative stress, cellular function, and biological performance.

Cellular senescence describes a state in which cells permanently stop dividing. This process can serve a protective function, for example by preventing damaged cells from continuing to multiply.

With increasing age, however, senescent cells can accumulate in tissues and influence their surroundings through signaling molecules. In longevity research, senescence is therefore regarded as an important factor in tissue function, cellular communication, and biological aging processes.

Stem cells are specialized cells that can renew themselves and develop into different cell types. They play an important role in tissue renewal, repair processes, and functional stability in the body.

With increasing age, their regenerative capacity can decline. In longevity research, stem cell exhaustion is therefore regarded as an important factor in tissue function, adaptability, and biological regeneration.

Intercellular communication describes the exchange of signals between cells. It occurs, among other things, through direct cell contact, hormones, growth factors and small messenger structures.

As we age, this signalling can become less precise. In longevity research, cell communication is therefore regarded as an important factor for tissue function, inflammation regulation, regeneration and the coordinated interaction of biological systems.

Chronic inflammation, also known as inflammaging, describes a persistent, low-grade activation of the immune system. With increasing age, immune regulation can change, causing inflammation-related signaling pathways to become more prominent.

In longevity research, inflammaging is regarded as an important factor in tissue function, cellular communication, regeneration, and the body’s biological resilience.

Dysbiosis describes an altered balance within microbial communities, particularly in the gut. The microbiome interacts closely with metabolism, the immune system, barrier function, and cellular communication.

With increasing age, the composition of the microbiota can change. In longevity research, the microbiome is therefore regarded as an important factor in biological regulation, systemic balance, and the connection between nutrition, the environment, and the body.