Satisfying Ways To Eat For A Longer Life, From A Health-Span-Focused MD

Aging is something to celebrate. The wisdom, life experience, and compassion accumulated through the years are all wonderful. But the slowing down and losing strength? Not so much. Thankfully, according to precision medicine doctor Florence Comite, M.D., these common side effects of getting older can be avoided.

"Aging is inevitable. But getting sick is not to me. With the right tools, you can actually stop biological aging and reverse it," Comite tells mindbodygreen.

Comite always recommends giving protein a starring role in your meals since the macronutrient is so effective at slowing the absorption of sugar and regulating appetite.

Managing blood sugar is essential for longevity, as research shows that high serum glucose levels are associated with higher perceived age1 (aka it makes you look older) as well as higher biological age2 (a measure of how your body is functioning on a cellular level).

While there is no universally agreed-upon amount of protein to eat daily, most experts now recommend consuming 1.2 to 2.0 grams of protein per kilogram of body weight daily. This means most active people will want to eat at least 100 grams a day, or 30 grams at each meal.

"Especially if you're vegan or vegetarian, you want to make sure that you get plenty of protein—and that's hard to do," says Comite. Check out our guide to getting enough protein on a plant-based diet here.

Not all carbs are "bad," but refined carbs and starchy foods like processed breads, cookies, pastas, and sugary drinks tend to have a high glycemic index and can spike blood sugar.

Comite does note that the extent to which these raise sugar levels will vary widely from individual to individual3. She personally wears a continuous glucose monitor (CGM) to see how her levels sway after she eats, say, a banana compared to a cookie.

Comite considers sleep the most important part of healthy aging—and your nighttime food choices have a big effect on it.

She recommends eating a satiating dinner (again, high in protein) that doesn't leave you feeling peckish before bed. Ideally, you're not eating within two to three hours of sleep. That said, you don't want to go to bed hungry either, as this can cause blood sugar to dip during the night and disrupt your precious snooze. Subpar sleep can also harm your body's ability to break down carbs and regulate appetite4, kick-starting a cycle that's hard to break.

While many people avoid fats because they are higher in calories, Comite notes that healthy fats like olive oil and avocado absolutely have a place in a longevity-supporting diet.

"You can't even absorb certain nutrients that are in a salad, for example, if you don't have a little bit of olive oil or some healthy fat there," she says, noting that vitamins like E, A, and D are fat-soluble. Missing out on these nutrients can speed up aging, she says, so she always recommends getting at least some healthy fat with each meal.

Finally, Comite notes that following a fad diet can actually accelerate the aging process. "You don't know something will fit you just because it worked for a celebrity," she says.

Whether it's raw food, South Beach, or an intense fast, there is no way of knowing if a certain eating plan will work with your genetic makeup. Highly restrictive diets can also stress you out and raise your cortisol levels, which will not help in the healthy aging department.