The Science of Longevity: What Research Shows

Longevity science has moved from fringe speculation to rigorous clinical research. Here's what the evidence actually shows about extending not just lifespan, but healthspan: the years you spend in good health.

The Biology of Aging

Aging isn't a single process but a constellation of interconnected mechanisms. Researchers have identified several "hallmarks of aging" that drive age-related decline:

• Cellular senescence: cells that stop dividing but refuse to die, releasing inflammatory signals
• Mitochondrial dysfunction: declining energy production at the cellular level
• Epigenetic alterations: changes in gene expression that accumulate over time
• NAD+ depletion: a critical coenzyme that decreases with age
• Telomere shortening: protective DNA caps that erode with each cell division

NAD+ and Cellular Energy

See also: [NAD+ and Cellular Aging Research](/resources/nad-plus-cellular-aging-research)

NAD+ (nicotinamide adenine dinucleotide) is essential for cellular energy production and DNA repair. Levels decline approximately 50% between ages 40 and 60.

Research findings:

• Animal studies show NAD+ supplementation reverses age-related mitochondrial dysfunction
• Human trials of NAD+ precursors (NMN, NR) show increased NAD+ blood levels
• Clinical evidence for downstream health benefits in humans is still emerging
• Compounded NAD+ formulations may offer improved bioavailability

Peptide Research

Several peptides are under investigation for their potential anti-aging properties:

[BPC-157](/resources/bpc-157-research): A peptide derived from a naturally occurring protein in gastric juice. Animal studies show enhanced tissue repair and anti-inflammatory effects. Human clinical data is limited.

Epithalon: A synthetic version of the naturally occurring peptide epithalamin. Research suggests it may support telomerase activity, potentially slowing telomere shortening. Most evidence comes from animal and cell culture studies.

[GHK-Cu](/resources/ghk-cu-copper-peptide-anti-aging-research): A copper-binding peptide that occurs naturally in human plasma. Levels decline with age. Research shows potential for skin regeneration, wound healing, and anti-inflammatory effects.

Lifestyle Interventions

The strongest evidence for longevity interventions comes from lifestyle modifications:

Exercise

• 150+ minutes/week of moderate exercise reduces all-cause mortality by 30-35%
• Resistance training preserves muscle mass and metabolic health
• Even small increases in activity from a sedentary baseline show significant benefits

Nutrition

• Caloric restriction without malnutrition extends lifespan in multiple animal models
• Time-restricted eating (intermittent fasting) shows metabolic benefits in human trials
• Mediterranean dietary patterns are associated with reduced cardiovascular mortality

Sleep

• Consistent 7-9 hours associated with lowest all-cause mortality
• Poor sleep accelerates multiple aging biomarkers
• Sleep quality may be as important as duration

The Promise and the Caution

Longevity medicine is advancing rapidly, but it's important to distinguish between established science and emerging research. Many interventions that show promise in animal models have not yet been validated in human clinical trials.

At Prescriva, we focus on evidence-informed approaches, combining the most promising research with established medical protocols, always under clinician supervision.

Individual results vary. This content is for informational purposes and does not constitute medical advice.

References

1. López-Otín C, et al. The hallmarks of aging. *Cell.* 2013 Jun. PMID 23746838. [https://pubmed.ncbi.nlm.nih.gov/23746838/](https://pubmed.ncbi.nlm.nih.gov/23746838/)
2. López-Otín C, et al. Hallmarks of aging: an expanding universe. *Cell.* 2023 Jan. PMID 36599349. [https://pubmed.ncbi.nlm.nih.gov/36599349/](https://pubmed.ncbi.nlm.nih.gov/36599349/)
3. Covarrubias AJ, et al. NAD+ metabolism and its roles in cellular processes during ageing. *Nat Rev Mol Cell Biol.* 2021 Feb. PMID 33353981. [https://pubmed.ncbi.nlm.nih.gov/33353981/](https://pubmed.ncbi.nlm.nih.gov/33353981/)
4. Paluch AE, et al. Daily steps and all-cause mortality: a meta-analysis of 15 international cohorts. *Lancet Public Health.* 2022 Mar. PMID 35247352. [https://pubmed.ncbi.nlm.nih.gov/35247352/](https://pubmed.ncbi.nlm.nih.gov/35247352/)