5 Nutrition Guidelines for Increasing Health Span

Would you rather increase your lifespan (the number of years alive and breathing) or "health-span" (the number of years free from disease)? Imagine yourself at age 80. You're dancing and laughing with your great-grandkids. You remember all of their names. You can still do daily activities of living, like brushing your teeth, showering, and getting dressed. Doesn't that sound nice: to be free from diseases of aging? The topic of anti-aging isn't new, but it has been picking up speed in recent years. I've indulged myself in reading the nutrition research on slowing down the aging process. If you want to be dancing around a living room full of loved ones at age 80, you're reading the right article. There are a few lifestyle behavior changes that can increase health-span, one being nutrition. Here are 5 nutrition guidelines for increasing health-span.

Timing of Meals

At this moment, the timing of meals is the most important piece of nutrition/health advice I can give. When to eat is almost as important as what to eat. According to an ongoing study by Dr. Satchin Panda, the average eating window is 15 hours. This is more than half of the day spent eating, digesting and metabolizing food. Every time we eat, our body produces enzymes and hormones necessary for digestion and metabolism. Unfortunately, our body isn't meant to be metabolizing food for more than 12 hours. Also, as it gets dark outside, our body starts preparing for sleep and digesting food is no longer a priority.

Intermittent fasting has become a popular topic of discussion over the last few years. Many public figures and intellectuals, such as Joe Rogan, Dr. Rhonda Patrick, Dr. Jason Fung, and Dr. Valter Longo are talking about it.

Time-restricted eating, a form of intermittent fasting, has been a practice and recommendation of mine over the last year. Time-restricted eating is a daily practice in which a person abstains from eating for at least 12 hours each day. For example, a 12 hour overnight fast can last from 7pm to 7am the following morning. This is the first regimen to adapt if you want to start intermittent fasting. If you are trying to lose weight or increase healthspan, I recommend increasing the fasting period to 14, 16 or 18 hours. I personally fast from 8pm to 12pm for a total of 16 hours of fasting. Occasionally, I’ll eat a little earlier, but I always remain within the 12-hour eating window.

After about 12 hours of fasting, glycogen stores become depleted (glycogen is stored carbohydrate found in the liver and muscle). After glycogen stores are gone, our body must make new glucose (gluconeogenesis). Fat is the next source of energy for breakdown (a process called lipolysis).

Fasting is beneficial for overall health because it results in lower fat mass, increased insulin sensitivity, and unnoticeable caloric restriction. Caloric restriction has been found to increase lifespan in many organisms.

Guideline #1: Practice time-restricted eating. Eat all meals within a 12-hour period. If you are trying to lose weight, increase your fasting window by 2-6 hours for a total of 14-18 hours of fasting daily.

Increase Fruit and Vegetable Consumption

The first recommendation I usually make when consulting with a patient is consuming more fruits and vegetables. Fruits and vegetables provide fiber, vitamins, minerals, and phytochemicals. Many diets tend to focus on restriction, which is not effective in creating a healthful relationship with food. Rather than restricting, think of what you can ADD to your diet (wink, wink: fruits and vegetables). Adding 5 servings of fruits and/or vegetables to your diet will be challenging but easier than a restrictive diet. If you love fruits and vegetables, I recommend having a variety! Try to consume different colors (green, blue, red, orange, yellow).

In regards to increasing longevity, eat more cruciferous vegetables (Brussels sprouts, broccoli, cabbage) as they contain a phytochemical called sulforaphane.

Fruit as a food group is under investigation right now due to the fructose it contains. I don’t think there is an issue with fructose if it’s bound to fiber. It’s not concentrated like high fructose corn syrup. If you are wary about adding fruits into the diet, start with berries. Raspberries and blackberries have the least amount of net carbohydrates.

Guideline #2: Eat 5 servings of fruits and/or vegetables each day. 1 serving of fruit is 1 medium piece or 1 cup. 1 serving of vegetables is ½ cup cooked or 1 cup raw.

Increase Healthful Fat Consumption

I get some fearful responses when I recommend increasing healthy fat consumption. Fat has been demonized for SO long, and I’m pretty tired of it. Fat is not the problem; the COMBINATION of excess fat and excess sugar is. To shorten my rant, WE NEED FAT. A dietitian friend of mine once had her audience hold their right hand in the air and say out loud: “Fat is my friend”. Now, I’m not talking about bacon, sausage and processed fat (hydrogenated oil). I’m pretty against anything processed. I’m talking about plant-based fats such as avocado, coconut, nuts/seeds, olives, and olive oil! Don’t even get me started on the importance of omega 3 fatty acids from fatty fish like salmon and ahi for overall health. Omega-3 fatty acids (ALA, DHA, and EPA) are ESSENTIAL fatty acids. “Essential” means that our body does not make this, and we must get it from food. I have personally started taking fish oil with EPA and DHA daily. A supplement is not necessary, but if you do not eat fish twice a week, I recommend starting a supplement (high quality, of course).

Fat does have a lot of calories per gram, but it’s satisfying. A high fat, low carbohydrate diet is effective for weight loss. Lowering body fat mass is important in increasing healthspan. Recent studies have shown a ketogenic diet being an effective method for treating the disease of obesity.

Supplementation with high doses of omega-3 fatty acids has been studied in many disease states. The omega-3 fatty acids are anti-inflammatory, unlike the omega-6 fatty acids found in animal products. Studies supplementing DHA and EPA have found improvements in those with cardiovascular disease, cognitive decline (Alzheimer’s and dementia), depression, inflammatory bowel disease, ADHD and more. All of the diseases above are diseases of aging and/or inflammation.

My favorite fats: walnuts, almonds, flaxseeds, chia seeds, hemp seeds, cacao nibs, olive oil, coconut (shreds, milk, oil), salmon, and raw ahi tuna.

Guideline #3: Consume healthful fats daily, especially nuts and seeds. Avoid processed fats and hydrogenated oil.

Get the Appropriate Amount of Protein

I’ve switched sides on this macronutrient. I strived to eat protein every 2 hours back in the day when I was weight lifting 6 times a week. I was OBSESSED with protein and gaining muscle. Unfortunately, protein speeds up the aging process. In the discussion of longevity, excess protein is a known nutrient for increasing the risk of aging diseases (cardiovascular disease and cancer). For my mechanism lovers, dietary protein increases mTOR which in turn inhibits autophagy. Autophagy is the recycling of cells and is important in slowing down aging.

Protein is a necessary nutrient during times of growth: infancy, childhood, pregnancy/lactation, and athletic training. Those older than age 65 also benefit from increasing protein due to increased muscle loss. If you do not fit in any of the groups above, you do not need excess protein.

Animal protein is a great, bio-available source of protein. Unfortunately, it’s TOO nutritious for those of us that are not in a growth state. I recommend eating more plant-based protein to ensure you do not exceed your protein needs. If you strive to increase your health-span, I recommend limiting your protein to 0.8 grams per kilogram of weight. If you REALLY want to calculate the minimum amount of protein you need, instead of using kilograms of total weight, use kilograms of lean body mass. I personally do not eat much meat, maybe once or twice a week. I have incorporated more beans, lentils, nuts/seeds into my diet. All of which are protein, but are less bioavailable, keeping my protein intake to a minimum.

If you can’t give up eating beef and chicken, I recommend choosing a high-quality source of protein. When reading food labels, be sure to pick up “grass-fed” or “pasture-raised” animal products. For eggs, look for “cage-free” or “omega-3” on the label. Consuming 4 oz of meat (about the size of the palm of your hand) will provide 28 grams of protein.

Guideline #4: If you are not in a “growth” state, limit protein intake. Consume fewer animal products and more plant-based proteins.

Calculate your protein needs:
You’ll need: current weight, calculator

Multiply 0.8 and weight in kilograms (or lean body mass if you know this number).
Example: I weigh 110 lbs. Divide by 2.2 to get kilograms. 110/2.2 = 50kg
50 kg x 0.8 = 40 grams of protein daily

Limit Processed/Simple Sugar

Sugar is not an essential nutrient. That’s right, our body does not need sugar to survive. Yes, our body prefers to use sugar for energy, but in excess, sugar is harmful. Excess sugar is stored as fat in cells and can cause insulin resistance and inflammation. Sugar also has an impact on our microbiome (the microorganism world that lives inside of us). Excess simple sugar can cause “bad” bacteria to flourish and wreak havoc. Dr. Rhonda Patrick provides a wonderful explanation of the impact a poor diet (high in refined sugar, low in fiber) has on our microbiome, causing inflammation resulting in cardiovascular disease. For my mechanism lovers, here is a short clip of Dr. Patrick explaining endotoxin and cardiovascular disease.

Sugars in the form of sugar-sweetened beverages (juice, soda, coffee, sweet teas) are the WORST food item you can put in your body. Drinking 8 oz of apple or orange juice is easy and contains 15-20 grams of sugar. To put it into perspective, that’s the equivalent of eating 4-6 teaspoons of sugar. Now, imagine eating 4 apples or 4 oranges. Could you do it? If there is one thing to get rid of besides smoking and binge drinking, it’s soda and other sweetened beverages.

If you are still unsure where you stand in this carbohydrate war, I recommend choosing whole foods for the time being. Choose complex carbohydrates such as beans, lentils, quinoa, millet, buckwheat, oatmeal, fruits, and vegetables. Fiber is a carbohydrate that is necessary for a healthful microbiome. Not all carbohydrates are bad but simple, processed carbohydrates should be limited if you want to increase your healthspan.

Guideline #5: Limit simple/processed carbohydrates. Avoid all sugar-sweetened beverages.

I understand life is life. Sometimes we will go to Chick-fil-A and order a 3-piece chicken strip with a buffalo, CFA, and ranch sauce. Sometimes we will eat a soft chocolate chip cookie in the work office. It's fine to indulge every once in a while as long as the majority of days are spent eating right and following the guidelines above. I wish you good luck on your health journey. May we all optimize our health by means of nutrition!