If you want to live a long and healthy life, eating whole foods is one of the best things you can do. Coupled with regular exercise, quality sleep, and strong social connections, a nutrient-rich diet can help extend your overall lifespan. But even if you're practicing these habits, it's still important to limit or avoid foods that work against longevity. Some foods can raise the risk of serious health issues, potentially leading to an early death.

We spoke with registered dietitians to identify the biggest culprits — and to find out what you should eat instead.

1. Processed Meats

Processed meats like bacon, sausage, pepperoni, deli meat, and hot dogs are convenient, but overeating them can reduce your lifespan. According to Rachael Ajmera, MS, RD, these meats are typically high in sodium, preservatives, and other ingredients that contribute to inflammation and oxidative stress — key drivers of chronic diseases like cancer and type 2 diabetes.

Processed meats are also high in saturated fat, which can raise blood cholesterol levels and increase the risk of heart disease — the leading cause of death globally. Regular consumption of sodium, nitrates, and nitrites (additives found in processed meats) has also been linked to gastrointestinal cancers, such as colon cancer, notes Lyndsay Hall, BASc, RD. Emerging research also suggests that processed meats can alter your gut microbiome, potentially increasing the production of metabolites linked to inflammation and heart disease.

What to eat instead: Swap processed meats for protein-rich foods like beans, lentils, tofu, tempeh, and edamame, which also provide fibre and antioxidants. Other options include unprocessed meats like chicken, fish, and turkey. For convenience, try canned fish or boiled eggs.

2. Sugar-Sweetened Beverages

Sugary drinks like soda, sweet tea, sports drinks, and energy drinks can shorten your life expectancy. These beverages deliver large amounts of added sugar with little to no nutritional value, making it easy to consume excess calories without feeling full. Their refined sugar content is quickly absorbed, leading to rapid spikes in blood sugar and a higher risk of type 2 diabetes.

Regular intake of refined sugars also increases the risk of chronic conditions such as cardiovascular disease, dyslipidaemia, and obesity. Research suggests that a higher intake of sugar-sweetened beverages is tied to an increased risk of premature death, especially from heart disease.

What to eat instead: Choose unsweetened or minimally sweetened drinks like water, sparkling water, and unsweetened tea. If plain water isn't your preference, try infusing it with fruits and herbs or making a homemade sports drink.

3. Salty Snacks

Salty snacks like crackers, pretzels, and potato chips are highly processed and packed with refined carbohydrates, unhealthy fats, and additives, while offering relatively little fibre, protein, or other beneficial nutrients. They are also typically very high in sodium, which can contribute to high blood pressure over time — a major risk factor for heart disease.

These snacks are also easy to overeat, which can drive up calorie intake and lead to weight gain, further increasing the risk of chronic diseases that can shorten lifespan.

What to eat instead: Choose more nutrient-dense options like roasted chickpeas, air-popped popcorn, or roasted edamame. You can also make your own baked veggie chips at home, giving you more control over the ingredients and salt content.

4. Packaged Pastries

Packaged pastries like cookies, brownies, and donuts are some of the worst foods for longevity. They are low in fibre, protein, vitamins, and minerals, yet high in added sugar, refined carbohydrates, calories, and saturated fats. Their sugar content can cause rapid spikes and crashes in blood sugar levels, negatively impacting metabolic health over time.

Because they are designed to be highly palatable, it's easy to overeat them, displacing more nutritious foods in your diet. Regularly eating pastries can contribute to weight gain, insulin resistance, type 2 diabetes, heart disease, and other chronic conditions associated with a shorter lifespan.

What to eat instead: While the occasional treat can fit into a balanced diet, choose more nutritious options like fresh fruit, dark chocolate, chia seed pudding, or yoghurt parfaits. Making your own treats at home also allows you to control the type and amount of sweetener used.

5. Foods High in Saturated Fat

Daily consumption of foods high in saturated fats — such as butter, cheese, cream, beef, pork, and lamb — is linked to increased health risks and potentially reduced longevity, especially if your diet lacks high-fibre, micronutrient-dense foods like fruits, vegetables, legumes, nuts, seeds, and whole grains.

A high intake of saturated fats can raise LDL ("bad") cholesterol levels, increasing the risk of heart disease. Excess cholesterol builds up in the arteries, leading to atherosclerosis — a condition that decreases blood flow to tissues and organs.

What to eat instead: Choose lean meats like fish or chicken breast instead of beef or pork. Fatty fish like salmon and tuna are especially beneficial, as they are high in unsaturated ("healthy") fats, which can help reduce cholesterol when eaten in place of saturated fats. You can also alternate animal proteins with plant-based versions like legumes, tofu, and edamame.

6. Alcohol

Though alcohol isn't a food, it's a significant part of social gatherings — and it can negatively impact longevity. Research has found that regular, higher consumption of alcohol promotes inflammation and increases the risk of certain cancers, including pancreatic, liver, oesophageal, and colorectal cancers.

Over time, regular alcohol consumption can also contribute to heart disease, high blood pressure, and unwanted weight gain — all factors that can shorten lifespan.

What to drink instead: If you don't already drink alcohol, it's best not to start. Non-alcoholic beers, wines, and mocktails are widely available and allow you to participate in social settings without the health risks. If you do choose to drink, do so in moderation — up to one drink per day for women and two for men, as recommended by health authorities.

Final Thoughts

Longevity isn't just about adding healthy foods to your diet — it's also about reducing or eliminating the foods that work against your health. By limiting processed meats, sugary drinks, salty snacks, packaged pastries, saturated fats, and alcohol, you can significantly lower your risk of chronic disease and support a longer, healthier life. Small, consistent changes to your eating habits can add up to big benefits over time.