The stability of our genome is a fundamental basis for cellular integrity. Over the course of a lifetime, DNA damage can occur due to environmental factors, metabolic processes, or errors in repair mechanisms. In longevity research, genome stability is therefore considered an important starting point for better understanding 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 considered important markers of cellular replicative reserve and biological stress. Their length is influenced by genetic factors as well as 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 a lifetime, such patterns can change, thereby affecting cellular functions, adaptability, and biological regulation. In longevity research, epigenetic processes are therefore considered a central interface between genetics, the environment, and lifestyle.

Proteostasis describes a cell's ability to correctly produce, fold, and, when necessary, degrade proteins. This balance is important for the reliable functioning of cellular structures and processes.

As we age, this quality control can become less efficient, which may lead to the accumulation of damaged or misfolded proteins. In longevity research, proteostasis is therefore considered a central factor for cellular order, 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.

As we age, this process can become less efficient. In longevity research, autophagy is therefore considered an important mechanism for cellular cleansing, adaptability, and functional stability.

Nutrient sensing describes the body's ability to perceive and respond to energy, nutrients, and metabolic signals. This includes, among other things, signaling pathways related to insulin, growth, cell division, and energy balance.

With increasing age, this regulation can become less precise. In longevity research, it is therefore considered an important interface between nutrition, metabolism, cell function, and biological adaptability.

Mitochondria are central structures of 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 balance, oxidative stress, cell function, and biological performance.

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

However, with increasing age, senescent cells can accumulate in tissues and influence their environment through signaling molecules. In longevity research, senescence is therefore considered an important factor in tissue function, cell communication, and biological aging processes.

Stem cells are specialized cells that can renew themselves and develop into various 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 considered a key factor for 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.

With increasing age, this signal transmission can become less precise. In longevity research, cell communication is therefore considered an important factor for tissue function, inflammation regulation, regeneration, and the coordinated cooperation of biological systems.

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

In longevity research, inflammaging is considered a key factor in tissue function, cell communication, regeneration, and the body's biological resilience.

Dysbiosis describes an altered balance of microbial communities, particularly in the gut. The microbiome is in close exchange with metabolism, the immune system, barrier function, and cellular communication.

The composition of the microbiota can change with increasing age. In longevity research, the microbiome is therefore considered an important factor for biological regulation, systemic balance, and the connection between nutrition, the environment, and the body.