Final answer:
Gestational hypertension's exact cause is unknown, but it is influenced by multifactorial risks and existing health conditions. Factors such as too much salt or pre-existing diabetes are not solely responsible for its onset. The condition is complex, and healthcare professionals continue to study its causes. Option c is correct.
Step-by-step explanation:
The cause of gestational hypertension is complex and multifactorial. There are many theories, but the consensus among healthcare professionals is that the exact cause is unknown.
It's important to understand that gestational hypertension refers to high blood pressure that develops during pregnancy and can have significant health implications for both the mother and the baby.
While some might speculate that factors like too much salt might play a role, others might consider the impact of potential toxins, or pre-existing conditions such as diabetes. Nevertheless, none of these factors exclusively or consistently predict the development of gestational hypertension.
It is also noted that excessive sodium reabsorption by renal tubules leading to either increased or decreased blood pressure or sodium (Na+) levels can affect blood pressure regulation, but these are not the sole causes of gestational hypertension.
Risk factors for developing hypertension, in general, include obesity, poor nutrition, lack of physical activity, and tobacco use. Additionally, pre-existing medical conditions like diabetes mellitus, kidney disease, and the use of certain substances or medications can affect blood pressure.
However, the specific mechanisms that lead to the onset of gestational hypertension during pregnancy remain unclear.