Dietary Recommendations for Cancer and Cardiovascular Prevention

General Dietary Pattern

The National Comprehensive Cancer Network recommends a predominantly plant‑based diet that markedly limits red and processed meats, ultra‑processed foods, and sugar‑sweetened beverages. 1

The American Cancer Society advises consuming at least 5 servings of a variety of fruits and vegetables each day, including them at every meal and snack, and selecting a wide range of colors and types. 2
When juices are consumed, they should be 100 % fruit or vegetable juice without added sugars. 2

The American Cancer Society recommends that whole‑grain foods replace refined grains and form the foundation of the diet. 2
According to the American Heart Association/Stroke Association, whole grains should constitute the base of daily eating patterns. 5

The American Heart Association suggests 2–4 servings (≈150 g each) of fish per week, emphasizing fatty fish such as salmon, mackerel, and sardines. 7
The American Cancer Society designates legumes (beans, lentils, chickpeas, peas) as the primary protein source, supplemented by skinless poultry and lean white meats. 3
Nuts and seeds (almonds, walnuts, hazelnuts, pumpkin and sunflower seeds) are recommended as regular protein‑and‑healthy‑fat sources. 1

Low‑fat or non‑fat dairy products, including unsweetened natural yogurt, are advised by the American Heart Association and Cardiovascular Research guidelines. [5][8]
The National Comprehensive Cancer Network and the American College of Cardiology endorse extra‑virgin olive oil or non‑tropical vegetable oils as the principal dietary fat, with avocado also encouraged. [1][9]
Replacing saturated fats with unsaturated fats from vegetables, fish, legumes, and nuts is recommended by the American Heart Association/Stroke Association. 5

The National Comprehensive Cancer Network limits cooked red meat to ≤ 500 g per week and advises choosing lean cuts and small portions when meat is consumed. 1
Cooking methods for meat should be baking, grilling, or stewing; frying or charring is discouraged. 2
Complete avoidance of processed meats (e.g., ham, hot dogs, sausages, bacon) is recommended by the American Cancer Society and the National Comprehensive Cancer Network, which link processed meats to increased cancer risk. [3][1]

The American Cancer Society calls for drastic limitation of ultra‑processed items such as French fries, packaged snacks, and fried products, as well as industrial cookies, sweets, sugary cereals, pizza, hamburgers, ice cream, and donuts. [2][3]
Sugar‑sweetened beverages should be limited, with added sugars kept below 6 teaspoons (≈25 g) per 2 000 kcal diet; a 350 ml soda contains roughly 10 teaspoons of sugar. [3][1]

Sodium intake should be < 6 g per day (≈1 teaspoon), per American Heart Association/Stroke Association guidance. 5
Alcohol limits are set at ≤ 1 drink/day for women and ≤ 2 drinks/day for men, according to the same cardiovascular societies. 5

Foods high in saturated fat and cholesterol should be limited, with saturated fat kept below 10 % of total caloric intake (American Heart Association). 6
Butter and high‑fat cheeses should be reduced, as advised by Cardiovascular Research. 8

Balancing caloric intake with energy expenditure is essential to prevent weight gain, per American Heart Association/Stroke Association recommendations. 5
When dining out, choose low‑fat, low‑calorie, low‑sugar options and avoid oversized portions; substitute energy‑dense foods with fruits, vegetables, and other low‑calorie items. 3
Monitoring food and beverage consumption is an effective weight‑control strategy, highlighted by the National Comprehensive Cancer Network. 1

Preferred cooking techniques are baking, grilling, stewing, or steaming; frying and charring are discouraged because they may increase oncologic risk (American Cancer Society). 2
Combining these dietary patterns with regular physical activity can markedly lower the risk of cardiovascular disease, cancer, type 2 diabetes, and other chronic conditions (American Cancer Society; American Heart Association/Stroke Association). [2][5]6