Lever
Lifestyle
- Regular physical activity
- Adequate sleep
- Stress management
Blutwerte · Marker
Leptin
Serum Leptin · Saettigungshormon
Adipokine & Metabolische HormoneNüchtern erforderlichZeitabhängig
- Einheit:
- ng/mL
Leptin quantifies the concentration of the hormone produced by adipocytes, reflecting energy balance and metabolic regulation.
Reference Ranges
Reference
3.7–11.1ng/mL
3.7
11.1
LowNormalHigh
Reference
Unit · ng/mLLeptin levels can vary based on sex, weight, and fasting status.
Overview
Übersicht
Leptin is an adipocyte-derived hormone that plays a crucial role in regulating energy balance and metabolism. It acts on neurons in the brain, particularly in the hypothalamus, hippocampus, and brain stem, to control food intake, thermogenesis, energy expenditure, and glucose/lipid metabolism homeostasis. Clinically, leptin is significant as it is involved in conditions like obesity, where elevated levels often indicate leptin resistance. This resistance is characterized by a diminished response to leptin's appetite-suppressing effects, leading to increased food intake and associated metabolic disorders. In the context of athletic performance and biohacking, leptin's role in energy regulation and metabolism makes it a point of interest for optimizing body composition and metabolic health. However, factors such as sleep deprivation can alter leptin levels, potentially impacting weight management and metabolic outcomes. Researchers have observed that leptin levels can be influenced by various factors, including sex, weight, and sleep patterns, which should be considered when interpreting results. Fasting and time of day may also affect leptin measurements, necessitating consistent testing conditions for accurate assessment.
Klinische Bedeutung
Elevated leptin levels often indicate leptin resistance, commonly seen in obesity and associated with metabolic disorders. Reduced leptin levels may be observed in conditions like sleep deprivation, potentially affecting appetite regulation and energy balance.
Dynamics
Trend Interpretation
Rising Values
Progressively rising leptin levels suggest worsening leptin resistance or increasing adiposity. Re-test in 4 weeks if outside optimal range.
Falling Values
Progressively falling leptin levels may indicate improved leptin sensitivity or weight loss.
Re-test Interval
4 weeks if outside optimal range
Etiology
Causes — High & Low
Cause
Elevated Levels
- Obesity
- Leptin resistance
- Chronic inflammation
- High-fat diet
- Genetic factors
Cause
Low Levels
- Sleep deprivation
- Caloric restriction
- Anorexia
- Hypothalamic dysfunction
- Malnutrition
Protocol
How to Optimize
Lever
Nutrition
- Balanced diet
- High-fiber foods
- Omega-3 fatty acids
Note:
Lifestyle changes should be tailored to individual health conditions and goals.
Testing Guidelines
🍽️Fasting Required
🕐Time-Sensitive
Leptin levels may vary throughout the day; morning fasting samples are recommended.
Testing Frequency
Annually for general health monitoring, more frequently if managing obesity or metabolic disorders.
Interfering Factors
- Recent intense exercise
- Acute stress
- Sleep deprivation
Related Peptides & Hormones
Ghrelin
hormoneCorrelated with
Open Research Questions
Current research suggests that the prognostic value of leptin and its receptor in colorectal cancer remains debated, with inconsistent findings regarding their correlation with patient outcomes. Researchers have not yet established definitive reference ranges for leptin levels in various populations, particularly in relation to obesity and metabolic disorders. Additionally, clinical questions regarding the mechanisms underlying leptin resistance and its role in reproductive health and chronic inflammatory conditions like Takayasu arteritis remain unanswered.
21 Research Publications
848
Total Citations
8
Human/RCT
3.2
Avg. Influence
2026
Latest
Sort
Filter
01Top
#01
The known and unknown of leptin in pregnancy.
ReviewInfluence14.0
295
This study reviewed the role of leptin in pregnancy, noting that leptin levels are higher during gestation and can indicate fetal growth. Researchers found that dysregulation of leptin production in pregnancy complications is associated with maternal and fetal health outcomes.
02Top
#02
The Leptin Resistance.
ReviewInfluence2.0
114
Researchers summarized the advances in understanding leptin resistance, a condition where the brain becomes less responsive to leptin, leading to increased appetite and obesity. They highlighted the association of leptin resistance with various metabolic disorders and discussed emerging mechanisms that could inform future obesity treatments.
03Top
#03
Leptin and seasonal mammals.
AnimalInfluence5.0
102
This study investigated seasonal variations in leptin levels in seasonal mammals, demonstrating that leptin secretion fluctuates with seasonal changes. Researchers found that exogenous leptin could induce fat loss in winter-like conditions, highlighting seasonal leptin resistance in certain mammals.
04
#04
Effects of acute sleep loss on leptin, ghrelin, and adiponectin in adults with healthy weight and obesity: A laboratory study.
HumanInfluence1.0
69
This study examined the effects of acute sleep deprivation on blood levels of leptin, ghrelin, and adiponectin in adults. Researchers found that after one night of sleep loss, leptin levels decreased while ghrelin and adiponectin levels increased, particularly among women and those with obesity.
05
#05
Leptin as a Biomarker of Stress: A Systematic Review and Meta-Analysis.
Meta-AnalysisInfluence1.0
62
Researchers conducted a systematic review and meta-analysis to evaluate leptin as a biomarker of stress. They found that leptin levels decreased following acute stress, with variations observed based on weight and sex, suggesting implications for obesity development.
06
#06
Leptin deficiency: clinical implications and opportunities for therapeutic interventions.
ReviewInfluence2.0
47
This review discussed the clinical implications of leptin deficiency and its potential therapeutic interventions. Researchers highlighted that leptin deficiency can lead to severe metabolic and endocrine issues, and leptin administration may restore some of these disturbances. The review emphasized the need for further clinical trials to explore leptin's therapeutic potential.
07
#07
Leptin and reproduction.
Review
47
Researchers reviewed the role of leptin in reproduction, noting its influence on hormone secretion and reproductive processes such as puberty and pregnancy. They discussed the complex signaling pathways involved and highlighted ongoing controversies regarding leptin's precise roles in reproductive health.
08
#08
Maternal serum and cord blood leptin concentrations at delivery.
Stefaniak Małgorzata, et al. · PloS one · 2019
HumanInfluence1.0
32
This study measured leptin concentrations in maternal serum and cord blood at delivery, establishing reference intervals for normal pregnancy. Researchers found a significant correlation between maternal and cord blood leptin levels, suggesting its potential role in assessing pregnancy health.
Key findings
- 01The average leptin concentration in maternal serum at delivery was 37.17 ng/mL, with a reference range of 33.19-41.14 ng/mL.
- 02Cord blood leptin levels averaged 14.78 ng/mL, with a reference range of 12.32-17.67 ng/mL.
- 03Leptin levels in cord blood increased with gestational age and were positively correlated with birth weight.
09
#09
Novel superactive leptin antagonists and their potential therapeutic applications.
ReviewInfluence2.0
18
Researchers developed superactive leptin antagonists with enhanced affinity for leptin receptors, which may have therapeutic applications in various diseases. The study suggests potential uses for these antagonists in treating inflammatory and autoimmune conditions, as well as cancer.
10
#10
Gynaecological cancers and leptin: A focus on the endometrium and ovary.
ReviewInfluence2.0
18
This review explored the relationship between leptin and gynecological cancers, particularly endometrial and ovarian cancers. Researchers highlighted leptin's involvement in cancer risk and progression, noting its dual role in physiological and pathological processes within the reproductive system.
Publication Trend
Research publications about Leptin over time
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