The Claim
In middle-aged and older adults with type 2 diabetes, 4 weeks of citrulline supplementation at 6 g/day increases plasma arginine levels by approximately 69% (∆43.3 ± 28.4 μM/L), and this increase is associated with improved microvascular endothelial function and increased calf muscle strength.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
In middle-aged and older adults with type 2 diabetes, taking 6 grams of citrulline daily for 4 weeks raises plasma arginine levels by about 69%, and this rise is linked to better blood vessel function in small vessels and stronger calf muscles.
See the scientific wording
In middle-aged and older adults with type 2 diabetes, 4 weeks of citrulline supplementation (6 g/day) increases plasma arginine levels by approximately 69% (∆43.3 ± 28.4 μM/L), which is associated with improved microvascular endothelial function and calf muscle strength, suggesting arginine bioavailability may be a limiting factor in vascular and muscular dysfunction in this population.
Citrulline is absorbed and turned into arginine in the kidneys. The extra arginine feeds a process that makes nitric oxide, which opens small blood vessels. Better blood flow delivers more oxygen and nutrients to muscles, making them stronger.
What the research says
1 studyTaking 6 grams of citrulline daily for four weeks boosted arginine levels in older adults with type 2 diabetes by about 70%, and this helped improve blood flow in small vessels and slightly strengthened their calf muscles. The study shows these changes are linked.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.