Lever
Lifestyle
- Regular physical activity
- Stress management techniques
- Adequate sleep
- Weight 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 fat stores.
Reference Ranges
Reference
1–20ng/mL
1
20
LowNormalHigh
Reference
Unit · ng/mLLeptin levels are generally higher in females due to higher body fat percentage. Fasting and time of day can affect levels.
Overview
Übersicht
Leptin is an adipocyte-derived hormone that plays a crucial role in the regulation of energy balance and metabolism. It acts primarily on neurons in the hypothalamus, hippocampus, and brain stem to modulate food intake, thermogenesis, energy expenditure, and the homeostasis of glucose and lipid metabolism. Clinically, leptin is significant as it is associated with leptin resistance, a condition commonly observed in obese individuals. This resistance is characterized by a reduced sensitivity of the brain to leptin, leading to increased food intake and decreased energy expenditure, contributing to obesity and related metabolic disorders. In the context of athletic performance and biohacking, leptin's role in energy regulation makes it a point of interest, particularly in understanding how to optimize body composition and metabolic health. However, leptin levels can be influenced by various factors, including time of day, fasting state, and individual metabolic conditions, which can confound its measurement and interpretation. Researchers emphasize the importance of standardized testing conditions to ensure accurate assessment of leptin levels.
Klinische Bedeutung
Elevated leptin levels often indicate leptin resistance, commonly associated with obesity and metabolic syndrome. Conversely, low leptin levels can suggest inadequate energy reserves or malnutrition.
Dynamics
Trend Interpretation
Rising Values
Progressively rising leptin levels suggest worsening leptin resistance or obesity. Retest every 3-6 months if levels continue to rise.
Falling Values
Falling leptin levels may indicate improved leptin sensitivity or weight loss.
Re-test Interval
6 months if outside optimal range
Etiology
Causes — High & Low
Cause
Elevated Levels
- Obesity
- Leptin resistance
- Chronic inflammation
- Polycystic ovary syndrome (PCOS)
- Insulin resistance
Cause
Low Levels
- Malnutrition
- Anorexia nervosa
- Hypopituitarism
- Extreme physical activity
- Chronic stress
Protocol
How to Optimize
Lever
Nutrition
- Balanced diet with adequate protein
- Omega-3 fatty acids
- Fiber-rich foods
- Reduce sugar intake
Note:
Consult a healthcare provider before making significant lifestyle or dietary changes.
Testing Guidelines
🍽️Fasting Required
🕐Time-Sensitive
Leptin levels can vary throughout the day; morning fasting samples are recommended for consistency.
Testing Frequency
Annually for those monitoring metabolic health, more frequently if managing obesity.
Interfering Factors
- Recent intense exercise
- Acute stress
- Hormonal contraceptives
Related Peptides & Hormones
Insulin
hormone or peptideCorrelated 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 standardized reference ranges for leptin levels in various diseases, particularly in obesity-related conditions. Additionally, clinical questions remain unanswered regarding the precise mechanisms of leptin resistance and its role in metabolic disorders, as well as its potential therapeutic applications in these contexts.
51 Research Publications
1,619
Total Citations
18
Human/RCT
2.8
Avg. Influence
2026
Latest
Sort
Filter
01Top
#01
The known and unknown of leptin in pregnancy.
ReviewInfluence14.0
301
Researchers reviewed the role of leptin in pregnancy, noting its increased levels during gestation and its potential as a biomarker for fetal growth. They highlighted dysregulation of leptin in pregnancy complications, suggesting its significance in maternal and fetal health.
02Top
#02
The role of leptin in leptin resistance and obesity.
ReviewInfluence5.0
286
This article summarized recent findings on the relationship between leptin resistance and obesity. Researchers observed that elevated leptin levels contribute to reduced sensitivity to the hormone, creating a cycle that exacerbates obesity. The review discusses the implications of leptin resistance for metabolic health.
03Top
#03
The Leptin Resistance.
ReviewInfluence2.0
119
Researchers summarized advances in understanding leptin resistance, a condition where the brain fails to respond to leptin, leading to increased appetite and obesity. They highlighted the association of leptin resistance with metabolic disorders and discussed new strategies for treating obesity. The study emphasizes the complexity of leptin's role in energy balance and metabolism.
04
#04
Leptin-cytokine crosstalk in breast cancer.
ReviewInfluence6.0
116
This review analyzed the relationship between leptin and breast cancer, highlighting its role in promoting tumor growth through inflammatory and angiogenic pathways. Researchers discussed the potential of targeting leptin signaling as a preventative measure in obese women at risk for breast cancer.
05
#05
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.
06
#06
Effects of acute sleep loss on leptin, ghrelin, and adiponectin in adults with healthy weight and obesity: A laboratory study.
HumanInfluence2.0
93
In a laboratory study, researchers found that acute sleep deprivation reduced blood levels of leptin while increasing ghrelin and adiponectin. The changes were more pronounced in women and those with obesity, suggesting that sleep loss may influence appetite regulation and weight gain.
07
#07
Leptin and its potential interest in assisted reproduction cycles.
Review
73
This review examined leptin's role in female reproductive function and its potential as a biomarker in IVF cycles. Researchers found that leptin levels may correlate with IVF outcomes, although further studies are needed to confirm these preliminary findings.
08
#08
Leptin deficiency: clinical implications and opportunities for therapeutic interventions.
ReviewInfluence2.0
66
This review discussed the clinical implications of leptin deficiency and its potential for therapeutic interventions. Researchers noted that leptin plays a critical role in energy regulation and that deficiency can lead to severe metabolic issues. The study highlights the potential for leptin replacement therapy in certain conditions.
09
#09
Leptin as a Biomarker of Stress: A Systematic Review and Meta-Analysis.
Meta-AnalysisInfluence1.0
65
This systematic review and meta-analysis aimed to determine if leptin levels decrease following acute stress. Researchers found that leptin levels significantly dropped after stress interventions, particularly in normal-weight individuals and women. The findings suggest that leptin may serve as a biomarker for stress responses.
10
#10
Leptin and adiponectin: pathophysiological role and possible therapeutic target of inflammation in ischemic stroke.
ReviewInfluence3.0
65
Researchers examined the roles of leptin and adiponectin in ischemic stroke. They found that these adipocytokines are linked to inflammation and atherosclerosis, suggesting that measuring their levels could serve as a prognostic biomarker. The study discusses their potential as therapeutic targets in stroke management.
Clinical Trials (7)
7
Total Trials
712
Total Enrolled
Targeting the Hepatic BMP-SMAD Pathway in Leptin Receptor Deficiency (LEPRD)
NCT07833592RECRUITING
Sponsor
Azienda Ospedaliero Universitaria Maggiore della Carita
Enrollment
35
Started
2026
Primary outcome
Circulating Hepatokine Levels
Leptin Receptor Deficiency Obesity
Precision Exercise in Obese Children With Bronchial Asthma
NCT07273500COMPLETED
Sponsor
Cairo University
Enrollment
72
Started
2023
Primary outcome
Leptin
Bronchial Asthma
Metformin in Kidney Disease
Sponsor
VA Office of Research and Development
Enrollment
125
Started
2014
Primary outcome
Change is Leptin to Adiponectin Ratio (LAR)
Chronic Kidney DiseaseCardiovascular DiseaseMetabolic Syndrome
A Comparison of the Metabolic Effects of Fructose, Glucose, High Fructose Corn Syrup and Sucrose at Normal Population Consumed Levels in Adults Aged 20-60 Years Old
NCT01797042COMPLETED
Sponsor
Rippe Lifestyle Institute
Enrollment
366
Started
2012
Primary outcome
Changes in the acute metabolic and hormonal response (glucose, insulin, leptin, active ghrelin, triglycerides, uric acid)
Obesity
Inflammatory Response to Salt in Essential Hypertension
Sponsor
Carmine Zoccali
Enrollment
32
Started
2010
Primary outcome
Change from baseline of inflammatory biomarkers (TNF-alpha, procalcitonin, IL-6, C-Reactive Protein, adiponectin and leptin) in response to salt intake.
Essential Hypertension.
Alterations in Postprandial Glucose and Lipid Metabolism in Patients With Obstructive Sleep Apnea
NCT00942110COMPLETED
Sponsor
Kyoto University, Graduate School of Medicine
Enrollment
58
Started
2009
Primary outcome
postprandial metabolic markers including glucose, cholesterol, triglyceride, ghrelin, leptin
Obstructive Sleep Apnea
Leptin in the Maintenance of Reduced Body Weight
Sponsor
Beth Israel Deaconess Medical Center
Enrollment
24
Started
2008
Primary outcome
Percent Change From Baseline in Body Weight at 6 Months
Obesity
Publication Trend
Research publications about Leptin over time
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