The Claim
Human physiological systems maintain systemic pH within a narrow range of 7.35 to 7.45 through active buffering and homeostatic mechanisms.
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.
The human body keeps the pH of its blood and fluids between 7.35 and 7.45 using chemical buffers and regulatory processes.
See the scientific wording
Human physiological systems maintain systemic pH within a narrow range of 7.35 to 7.45 through active buffering and homeostatic mechanisms.
When the body produces acid, special chemicals in the blood neutralize it, the lungs breathe out the extra carbon dioxide that comes with it, and blood flow increases to carry away the acid faster. This keeps the blood’s acidity perfectly balanced no matter how much acid is made.
What the research says
3 studiesThe study shows that when people get very sick and their blood gets too acidic, giving them baking soda helps fix it — which means our bodies normally use similar chemicals to keep blood pH just right.
Study: The apparent buffer value of human blood for CO2 as a function of temperature.
The study shows that when your body gets warmer, your blood gets better at balancing its acidity, which helps keep your pH stable. This supports the idea that your body has built-in systems to maintain a safe, narrow pH range.
The study shows that when your brain gets busy, it increases blood flow just enough to wash away extra acid produced by energy use, keeping the pH perfectly balanced — proving your body actively maintains a stable pH.
Related videos
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 3 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.