5 eating habits you should give up to live a long life

“Quick” health improvement methods are often very attractive but lack sustainability. Real change only comes from consistent choices every day, whether it’s regular exercise or careful consideration of what you put on your plate.

Nutritionist Melanie Murphy Richter, confirms that healthy aging does not come from extreme or short-term measures.

“It’s shaped by daily habits that help reduce metabolic stress and inflammatory pressure over time,” she said. According to her, a diet that prioritizes plants, limits processed foods, supports gut health and balances protein will create an internal environment that helps the body enhance its ability to recover, adapt and prolong a healthy lifespan.

This means that besides the things you need to add, there are habits you should cut back on or completely eliminate. Ms. Murphy Richter points out five eating habits that may be speeding up the aging process and offers advice to help you feel your healthiest now and in the future.

Regularly consume too much sugar and refined starches

“Frequent spikes in blood sugar cause constant pressure on the body,” Richter said. Over time, this contributes to insulin resistance, inflammation and oxidative stress – all of which are closely linked to accelerated biological aging, cardiovascular diseases and cognitive decline.

The key word to note here is “overconsumption”. Richter doesn’t recommend throwing out every sugary starch or non-whole grain in your kitchen cupboards, but instead consider alternatives as often as possible.

If you like white pasta, try not to eat it every day and replace some servings with unrefined options. “A diet that emphasizes fiber-rich plants, healthy fats and balanced meals will help keep glucose levels stable, reducing long-term metabolic stress,” she adds.

Overreliance on ultra-processed foods (UPFs)

Processed foods are difficult to avoid completely, but cutting back on ultra-processed foods (UPFs) – such as processed meats, sugary cereals, soft drinks and high-salt ready meals – is essential.

“Ultra-processed foods tend to overwhelm the nutrients the body needs for healthy aging,” Richter analyzed. Many contain inflammatory fats, refined carbs and additives that can disrupt gut health and metabolic function over time.

Instead, prioritize meals made from whole foods. A longevity diet is primarily built around whole, minimally processed foods that nourish both the cells and the gut microbiome.

Maintaining excessively high animal protein intake for decades

The link between colorectal cancer and red and processed meat is well established, but many people still fail to connect this with the concept of longevity.

“Diets that are too animal-protein skewed – especially when plant intake is low – are associated with strong activation of biological pathways that lead to cellular aging,” Richter said, adding that a more plant-first approach, combined with age-appropriate animal protein intake, would help improve metabolic health and prolong longevity.

Ignore gut health until problems arise

“Gut health affects more than just digestion,” Richter says. It plays a key role in immune function, inflammation control, metabolism and even brain health. When the gut is neglected over many years, it can silently accelerate the aging process across many body systems.

Therefore, besides cutting out harmful foods, adding a variety of foods to keep the digestive system in the best condition is equally important. A diet rich in diverse fibre, fermented foods and maintaining consistent meal times will help support a resilient microbiome over time.

Insufficient food intake and prolonged metabolic stress

Murphy Richter’s final point emphasizes the importance of maintaining stability and not being too hard on yourself. When you focus too much on abstinence, it can age your body as quickly as overeating.

“Prolonged restricted eating, frequently skipping meals, or inconsistently nourishing the body can cause chronic stress on the body. This negatively affects hormones, muscle maintenance, and metabolic flexibility,” she explains.

Healthy aging is better supported by providing adequate and consistent nutrition that meets the body’s needs while maintaining metabolic resilience. For example, muscle is an energy-consuming tissue. To maintain muscle mass as we age to protect our skeleton, control blood sugar, and support metabolic health, we need to nourish it with a proper diet and exercise regimen.