Brenda Khan
The key to a longer life is not just about what you eat but also when you start eating for longevity. Research shows that a diet rich in legumes and whole grains can add up to 10 years to a person's life, especially if they start eating this way early on. The Mediterranean diet has also been linked to longevity, with a 4% to 7% reduced risk of death from any cause for each one-point increment in adherence to the diet. This diet includes plenty of fruits, vegetables, nuts, legumes, whole grains, and healthy fats like extra virgin olive oil. Plant-based diets are also associated with longer lifespans, with populations following these diets living on average 10 years longer than their counterparts. While genetics plays a role in life expectancy, lifestyle choices, including diet and exercise, have a much greater influence.
| Characteristics | Values |
|---|---|
| Number of extra years | Up to 10 years |
| Types of food | Fruits, vegetables, legumes, whole grains, nuts, fish |
| Specific foods | Tomatoes, blueberries, spinach, kale, mushrooms, walnuts, olive oil, green tea |
| Diet types | Mediterranean diet, plant-based diet, DASH diet, Okinawan Diet |
| Foods to limit or avoid | Red meat, processed meat, added sugar, saturated fat, sodium, highly processed foods |
| Other factors | Exercise, genetics |
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What You'll Learn
The Mediterranean diet
A sample menu for a week of meals on the Mediterranean diet includes Greek yogurt with strawberries and chia seeds for breakfast, a whole grain sandwich with hummus and vegetables for lunch, and a tuna salad with greens and olive oil, or a Mediterranean pizza made with whole wheat pita bread topped with cheese, vegetables, and olives for dinner. Snacks can include fresh fruit with nuts, olives, or roasted chickpeas. It is recommended to consume all food in moderation and there is usually no need to count calories or track macronutrients unless managing specific health conditions such as glucose levels.
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The Okinawan diet
Sweet Potatoes
Sweet potatoes, particularly the purple-fleshed Okinawan variety, are a staple food in the Okinawan diet. They are known for their high nutritional value and are consumed in various forms, including the leaves of the plant.
Vegetables and Legumes
Seaweed
Seaweed is commonly consumed in the Okinawan diet and offers a range of health benefits. Different types of seaweed, including kombu, hijiki, and mozuku, are rich in iodine, folate, iron, magnesium, and astaxanthin. Seaweed is also a good source of protein, amino acids, and other minerals.
Moderate Fish and Meat Intake
Limited Dairy and Sugar
The traditional Okinawan diet minimizes dairy products and added sugars. Dairy consumption is very low, and natural sweeteners like Okinawan sugarcane (uji) are used sparingly.
Herbs, Spices, and Oils
Okinawan cuisine incorporates various herbs, spices, and oils in cooking. These ingredients not only add flavour but may also have potential health benefits, contributing to the overall nutritional profile of the diet.
While the Okinawan diet has been associated with the longevity and health of the Okinawan people, it may not be suitable for everyone. It is important to consult with a healthcare professional or registered dietitian before making significant dietary changes, especially if you have any underlying health conditions.
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The DASH diet
The number of servings recommended in the DASH diet depends on an individual's daily calorie needs. For a 2,000-calorie-a-day diet, specific guidelines are provided for daily and weekly servings to meet the DASH targets. This diet is flexible and does not require any special foods, focusing instead on achieving nutritional goals.
In addition to the DASH diet, other dietary patterns have been linked to longevity. The Mediterranean diet, which includes simple meals like fish served with greens and olive oil, has been associated with longer telomere length and a reduced risk of death from any cause. Furthermore, a primarily plant-based diet, as followed by the Seventh-Day Adventists in Loma Linda, California, has been linked to an average of 10 years longer life expectancy compared to their North American counterparts.
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The healthful plant-based diet
A plant-based diet has been linked to longer life expectancy and can lower the risk of early death. Loma Linda, California, has the highest concentration of Seventh-Day Adventists, a population known for their primarily plant-based diets. On average, they live 10 years longer than their North American counterparts.
Plant-based diets offer all the necessary protein, fats, carbohydrates, vitamins, and minerals for optimal health and are often higher in fibre and phytonutrients. A healthful plant-based diet emphasizes the consumption of healthy plant foods, such as whole grains, fruits, vegetables, nuts, legumes, and healthy oils, while reducing the intake of less healthy plant foods and animal foods.
When switching to a plant-based diet, it is important to center your meals around plant-based foods. If you eat animal products, only eat them in smaller quantities, paying attention to the quality. Dairy, eggs, poultry, meat, and seafood are used more as a complement to a plant-based meal rather than the main focal point.
- Start by cooking a vegetarian meal at least one night a week.
- Build these meals around beans, whole grains, and vegetables.
- Include whole grains for breakfast, such as oatmeal, quinoa, buckwheat, or barley.
- Add some nuts or seeds along with fresh fruit.
- Try a variety of green leafy vegetables such as kale, spinach, collards, Swiss chard, and other greens each day.
- Steam, grill, braise, or stir-fry to preserve their flavor and nutrients.
- Build a meal around a salad with a base of romaine, spinach, Bibb, or red leafy greens.
- Eat fruit for dessert, such as a ripe peach, a slice of watermelon, or a crisp apple.
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Foods to eat: fruits, vegetables, nuts, legumes, whole grains
Research has shown that a diet rich in fruits, nuts, legumes, vegetables, and whole grains is linked to a lower risk of early death. This is due to the nutrients and antioxidants found in these foods, which can reduce the risk of illnesses such as obesity, cardiovascular disease, and type 2 diabetes.
When it comes to fruits, berries are an excellent choice. Studies have shown that consuming blueberries or strawberries daily can lead to improved blood pressure, reduced oxidative stress, and lower cholesterol levels. Additionally, berries have anti-cancer properties and are beneficial for brain health. Pomegranates are another unique and tasty fruit option, offering a mix of sweet and tart flavors.
For nuts, almonds, pistachios, walnuts, and cashews are all excellent choices. These nuts are rich in various nutrients, including vitamins, healthy fats, and minerals like copper and manganese. Regular consumption of these nuts may boost heart health, reduce cholesterol and blood sugar levels, and promote healthy gut bacteria.
Legumes, such as beans, peas, and lentils, are also key components of a longevity-promoting diet. They are a great source of soluble fiber, which helps lower cholesterol, and they contain resistant starch, which can be converted into short-chain fatty acids that prevent colon cancer. Legumes are also beneficial for blood sugar control and weight loss.
Lastly, cruciferous vegetables like broccoli, cauliflower, Brussels sprouts, kale, and cabbage are extremely nutrient-dense. They offer anti-cancer benefits and can protect against heart disease. Leafy greens, such as spinach and lettuce, are also important for maintaining eye health and reducing the risk of heart attacks, strokes, and diabetes.
Incorporating these foods into your diet can be a delicious and nutritious way to promote a longer and healthier life.
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Frequently asked questions
There is no one-size-fits-all diet for improving longevity, but eating habits that are linked to longer life include those rich in fruits, vegetables, nuts, legumes, and whole grains. The Mediterranean diet, plant-based diets, and the Okinawan Diet are also linked to reduced disease risk and improved longevity.
Changing your diet may help you live up to 10 years longer, and the younger you start, the greater the predicted increase in life expectancy.
Some foods that are especially good for certain parts of your body include:
- Tomatoes: contain lycopene, vitamins C and E, beta-carotene and flavanol antioxidants, which protect against prostate cancer, UV skin damage and cardiovascular disease.
- Leafy greens: rich in the essential B-vitamin folate, lutein and zeaxanthin, which protect the eyes from light damage.
- Mushrooms: contain aromatase inhibitors, which protect against breast cancer. They also have anti-inflammatory effects, enhance immune cell activity, prevent DNA damage, slow cancer cell growth and inhibit angiogenesis.
- Onions: benefit the cardiovascular and immune systems and have anti-diabetic and anti-cancer effects.
