A person is diagnosed as being at high risk of developing coronary heart disease (CHD).
Explain how taking statins reduces the risk of a patient developing coronary heart disease (CHD).
Figure 1 shows cross-sections of three types of blood vessels in the human body, labelled X, Y, and Z.
Which letter from Figure 1 represents the type of blood vessel in which a stent is fitted?
Explain how a stent placed inside this blood vessel helps to prevent a heart attack.
Table 1 shows the effect of daily intake of soluble dietary fiber on the percentage (%) decrease in the risk of developing CHD compared to a person with a low-fiber diet.
Table 1
| Category | Daily soluble fiber intake (g) | Percentage (%) decrease in risk of CHD |
|---|---|---|
| A | 5 | 8 |
| B | 10 | 18 |
| C | 15 | 25 |
| D | 20 | 27 |
Give two conclusions that can be made from the data in Table 1.
Describe one lifestyle factor, other than daily dietary fiber intake, that can increase the risk of coronary heart disease.