The things that most strongly influence your personality are your environment, your genes, and your experiences. It has been shown in studies that the environment and our genes both play an important role in determining what oulr personality would look like. However, what we experience personally also affects how we will behave and what kind of personality we will have. For that reason it's a combination of the three.
1. Eating whole foods (it is essential to keeping your gut microbiota happy)
2. Exercise
3. Good rest
4. Avoid drugs
C. Sperm and egg cells are made during meiosis
They could take a number of medications that would help.
Statin- Which lowers the livers production of cholesterol.
Vasodilator- Which widens blood vessels.
Or Blood thinners- Which helps prevent or dissolve blood clots.