CASE STUDY

Margaret is a 46 year old Hispanic woman who is a new patient in your dental practice. While recording vitals, the dental hygienist noted that Margaret's blood pressure was slightly elevated. While reviewing her health history, the hygienist discovered that Margaret has a family history of high cholesterol and heart disease. Margaret commented that she takes no medications other than an occasional aspirin for headaches. Mild to moderate periodontitis was noted on further examination of the oral cavity. Margaret also complained of dry mouth and frequent thirst. The hygienist questioned Margaret about her eating habits. She reported that she didn't eat many fresh fruits or vegetables. Her diet mainly consists of dried beans, fried meats, and tortillas. Margaret also told the hygienist that she is lactose intolerant so she avoids dairy products.

QUESTION:

Which of the following characteristics of Margaret's diet puts her at increased risk for heart disease?

Question

CASE STUDY

Margaret is a 46 year old Hispanic woman who is a new patient in your dental practice.  While recording vitals, the dental hygienist noted that Margaret's blood pressure was slightly elevated.  While reviewing her health history, the hygienist discovered that Margaret has a family history of high cholesterol and heart disease.  Margaret commented that she takes no medications other than an occasional aspirin for headaches.  Mild to moderate periodontitis was noted on further examination of the oral cavity.  Margaret also complained of dry mouth and frequent thirst.  The hygienist questioned Margaret about her eating habits.  She reported that she didn't eat many fresh fruits or vegetables.  Her diet mainly consists of dried beans, fried meats, and tortillas.  Margaret also told the hygienist that she is lactose intolerant so she avoids dairy products.

QUESTION:

Which of the following characteristics of Margaret's diet puts her at increased risk for heart disease?

BlackTom AI · Accepted Answer

First, we restate the scenario to ground the analysis: a 46-year-old patient with dietary patterns including fried meats, tortillas, dried beans, limited fruits/vegetables, lactose intolerance leading to dairy avoidance, and a preference for fried foods. The question asks which dietary characteristic most raises her risk for heart disease.
Option 1: lack of fruits and vegetables. While a diet low in produce is associated with poorer overall health and can contribute to cardiovascular risk, it is not as directly linked to heart disease risk as the effect of saturated fat on lipid profiles. Fruits and vegetables mainly influence risk via fiber, antioxidants, and potassium, but this option does not capture the primary dietary driver described.
Option 2: low intake of water. Hydration status influences oral health and general well-being, but there is no strong, direct causal link between low water intake and increased heart disease risk that would make this the best answer among the choices provided.
Option 3: increased amounts of protein. In isolation, higher protein intake is not inherently a major driver of heart disease risk unless the protein source is unhealthy (for example, processed meats with high saturated fat and cholesterol). However, the option as stated does not specify the protein source and is therefore too vague to identify as the key risk factor here.
Option 4: high saturated fat intake. This choice targets a well-established risk factor for cardiovascular disease: high intake of saturated fats tends to raise LDL cholesterol levels, which is strongly associated with a higher risk of heart disease. Given Margaret’s dietary pattern that includes fried meats (often rich in saturated fats) and limited intake of fruits/vegetables and dairy avoidance (which could influence calcium and other nutrient balance but not as directly as saturated fats), this option best aligns with a concrete, evidence-based mechanism for increasing heart disease risk.
In summary, among the listed dietary characteristics, high saturated fat intake is the most direct and well-supported contributor to elevated heart disease risk due to its impact on LDL cholesterol and atherogenic processes. The other options describe factors that can influence health but do not connect as strongly or specifically to cardiovascular risk in the context given, or they lack the direct mechanistic link that saturated fat provides to heart disease risk.

OC_DHYG430_202510FAII_BL-1 Midterm

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