Foods that lengthen lifespan are primarily whole, plant-based items like legumes, whole grains, nuts, seeds, fruits (especially berries), and vegetables, combined with sources of healthy fats like fatty fish and olive oil, while limiting processed foods, sugary drinks, and red meat, according to research on healthy diets and longevity. These foods provide antioxidants, fiber, and essential nutrients that combat inflammation, support heart and brain health, and reduce risks of chronic diseases, potentially adding years to your life.
Diets like the Mediterranean and DASH, emphasizing vegetables, fruits, whole grains, legumes, and healthy fats, have been linked to longer lifespans. Think colorful salads, hearty veggie stews, and whole-wheat pasta tossed with olive oil and herbs.
The 2-2-2 food rule is a simple guideline for leftover safety: get cooked food into the fridge within 2 hours, eat it within 2 days, or freeze it for up to 2 months to prevent bacteria growth, keeping it out of the temperature "danger zone" (40-140°F or 5-60°C).
A peanut butter and jelly sandwich (PB&J) adds about 33 minutes to your healthy lifespan per serving, according to a University of Michigan study that measured life expectancy impacts of over 5,850 foods using the Health Nutritional Index (HNI). This sandwich tops the list for adding time, with nuts and seeds also being highly beneficial (around 25 mins) and processed items like hot dogs subtracting time.
While there are several contenders, potatoes are often cited as one of the best single foods for survival due to their caloric density and nutrient content.
Understanding the 3-3-3 Rule
Specifically, the rule suggests: Three balanced meals per day. Three hours between each meal. Three hours of movement per week.
Understanding Survival Foods
15 Best Anti-Aging Foods for Youthful Skin
The 7 keys to longevity generally focus on lifestyle factors: moving more, eating whole foods (fruits/veggies), prioritizing sleep, managing stress, building strong social connections, avoiding smoking/excess alcohol, and maintaining a positive mindset, all while actively managing chronic conditions and keeping your brain engaged for a longer, healthier life.
What food can you survive on forever? No, it is not possible to survive on a single food forever without developing nutritional deficiencies. While some foods offer a broad range of nutrients, none provide all the essential macronutrients, vitamins, and minerals needed to sustain long-term health.
Once you have your first meal, depending on its content and balance, it's recommended to have each subsequent meal every three to four hours to prevent dips in blood sugar levels (which can lead to feeling hangry). Meals should include a protein-rich food, high-fiber starches, vegetables, fruits, and fat.
Bacteria can grow rapidly on food left out at room temperature for more than 2 hours. If food is left out in a room or outdoors where the temperature is 90 degrees F or hotter, food should be refrigerated or discarded within just 1 hour. Myth: When I microwave food, the microwaves kill the bacteria.
1. Almonds. There you have it — the humble almond can be considered the most nutrient-dense food on the planet. Used to the spotlight by now, almonds have been at the center of multiple studies on heart health and diabetes-related benefits.
Cherries, oranges, avocados and apples are all loaded with nutrients that may add years to your life; plus, they're filling and delicious.
The eight lifestyle changes that could extend your life
Walking is one of the best-studied forms of physical activity, with clear longevity benefits, Kraus says. And, he notes, while the guidelines urge a minimum of 150 to 300 minutes of such moderate activity each week, you start seeing life-extending benefits with your first brisk steps.
Italy's youth are facing obesity because of what Longo calls the “poisonous five P's—pizza, pasta, protein, potatoes, and pane (or bread),” Jason Horowitz writes in the NYT. Longo fears Italians will live long but not healthfully if this pattern continues to dominate the culture.
Stick to a sleep schedule
Go to bed and get up at the same time every day, including weekends. Being consistent reinforces your body's sleep-wake cycle. If you don't fall asleep within about 20 minutes of going to bed, leave your bedroom and do something relaxing.
That's why so many wonder: “How can I look younger naturally?” While aging is inevitable, you can slow down visible signs by focusing on hydration, sun protection, antioxidant-rich foods, and regular facial exercises. These help maintain skin elasticity and reduce wrinkles naturally.
Pomegranates have been used for centuries as a healing fruit. They are rich in vitamin C and a variety of potent antioxidants. These healthy fruits also contain a compound called punicalagins, which can help preserve collagen in the skin, slowing signs of aging.
The Japanese diet is low in processed foods and added sugars and high in fresh vegetables, seafood, soy products, and rice. This diet is rich in antioxidants, vitamins, and omega-3 fatty acids, which help fight oxidative stress and inflammation, two major causes of aging.
A basic emergency supply kit could include the following recommended items:
The three foods you can survive on are potatoes, beans, and spinach. These foods provide a combination of carbohydrates, proteins, vitamins, and minerals essential for maintaining health in a survival situation.
Any essential medication and a first aid kit. Three days' supply of bottled water and ready-to-eat food that won't go off. Copies of important documents, such as insurance policies and birth certificates.