There are no concrete actions to increase sperm volume. The correct thing to do would be to redirect the question to How can semen quality be improved?
The seminal characteristics are specific to each male. However, there are certain factors that can modify the seminal quality causing it to increase or decrease.
Factors that decrease semen quality are tobacco, alcohol, drugs, a poor diet, a very stressful lifestyle, continuous and direct exposure to radiation or chemical agents harmful to health.
To improve seminal quality, the right thing to do is lead a healthy lifestyle:
- Balanced and healthy diet (favour the regular consumption of foods rich in antioxidants)
- Maintain an adequate weight (excess weight is negative for seminal quality)
- Maintain a low-moderate stress level
However, there are pathologies such as agenesis of the vas deferens, infections in glands such as the seminal vesicles or prostate, etc. that can reduce the volume of an ejaculate, and therefore it is very important to consult a specialist.