Last week, I wrote about the importance of when you eat… but what you eat is also important to your health. A ranking of popular diets for 2020 ranked the traditional Mediterranean diet as #1. This rating was based on how nutritious and safe the diet is; how effective it is for weight loss; how easy it is to follow and stick with; and how well it protects against diabetes and heart disease. The Mediterranean diet is also recognized by the Mayo Clinic and World Health Organization as a healthy and sustainable dietary pattern.
Advantages of the Mediterranean diet
The Mediterranean diet is a traditional way of eating that people living in counties in the Mediterranean area have followed for generations, rather than a constructed diet based on manipulating components of food. This diet has attracted attention because of the lower rates of heart disease and cancer in populations who follow it.
While other diets are better at losing weight more quickly, the Mediterranean diet helps maintain a healthy weight without severely limiting or removing entire food groups from your plate. This can make it much easier to follow long-term. Of course, weight loss or gain depends on how much of the recommended food you eat.
This diet includes a wide variety of foods, making it enjoyable and easy to follow, with just a few basic “rules” on what foods to choose most often.
And, with this diet, a glass or two of red wine along with your meal is acceptable and possibly even advantageous but, of course, not necessary if that’s your taste. For me, that’s a plus… a nice glass of red wine makes a meal more special!
What is the Mediterranean diet?
The Mediterranean diet is more of an eating pattern than a structured diet. It is a plant-based diet that emphasizes eating fruit, vegetables, whole grains, beans, nuts, legumes (lentils, peas, chickpeas, beans, soybeans, peanuts), olive oil and plenty of tasty herbs and spices (lessening the need for salt); and seafood at least twice a week; and poultry, eggs, cheese and yogurt in moderation. Sweets and red meat are saved for special occasions. And a splash of red wine if that’s to your taste—the recommended amount is one glass a day for women and two for men. (I have often questioned why men are thought to be able to cope with twice what women can, given the often-small difference in body weight… but that’s a subject for another blog!)
Here is how the Mayo Clinic website describes the diet:
· Daily consumption of vegetables, fruits, whole grains and healthy fats (mainly olive oil)
· Weekly intake of fish, poultry, beans and eggs
· Moderate portions of dairy products
· Limited intake of red meat
Find it tough to change the way you eat?
McMaster University’s Optimal Aging Portal suggests starting with these 5 steps (Guess what? They recommend the Mediterranean diet too!):
1. Please pass (up) the salt—reducing sodium (in salt) will help lower blood pressure which, in turn, will decrease your risk of heart disease. Try using herbs and spices for flavour instead. Note that many processed foods are high in salt.
2. Nothing fishy about this advice—eat more salmon, mackerel, tuna and other fish high in omega-3 fatty acids. Don’t like fish? Try a fish oil supplement instead.
3. Cut the (saturated) fat—red meat and dairy are generally higher in this type of fat. Reducing these and replacing with healthier unsaturated fats (found in plants and fish) can lower risk of heart disease.
4. Choose a smaller plate—the size of your plate, food package, or portion you are offered (at home or in a restaurant) can influence how much you eat. Using a smaller plate and avoiding “super size” portions in restaurants can help avoid health risks associated with weight gain.
5. Go Mediterranean—as discussed above, learn about the Mediterranean diet, where you are encouraged to eat more vegetables, fruit, fish, whole grains and unsaturated fats like olive oil. There is evidence that this diet can improve blood sugar, insulin and blood pressure as well as help you lose weight.
Diet can also affect mental health
What you eat can also influence your mental health. Nutritional psychiatry, the study of how food is connected to mental function and mood, is a new but interesting field that is working to determine the connections between our diet and our mental health.
What you eat directly affects the structure and function of your brain and, ultimately, your mood. For example, we know that the brain chemical, serotonin, affects mood and many drugs work by increasing this neurochemical. It is also linked to diseases like irritable bowel syndrome, cardiovascular disease (heart disease and stroke), and osteoporosis. And it helps regulate sleep and appetite, and inhibits pain. But 90-95% of serotonin is produced in the gut, not the brain!
We also know that what you eat influences the “good” bacteria in your intestines, your microbiome, and these bacteria activate nerve pathways directly between the gut and the brain, along with their many other effects on health that scientists are currently identifying. Studies show that taking probiotic supplements can lower anxiety levels and perception of stress, and improve mental outlook, when compared to those not taking the supplements. Many traditional diets contain fermented foods, which act to improve the microbiome in the same manner as probiotic supplements.
As well, diets high in refined sugars and processed foods, like the typical Western diet, worsen symptoms of mood disorders, such as depression, promote inflammation and oxidative stress causing harm to the brain and other parts of the body.
So, consider trying a traditional diet like the Mediterranean diet for 2 or 3 weeks. Think about adding a few fermented foods—experts suggest 5 servings a week of 3 different kinds—and see how it makes you feel.
The field of nutritional psychiatry is relatively new, but it makes sense that what we eat can affect how we feel as well as our overall health. Remember, you are what you eat!
References:
Best Diets Overall—US News
Nutrition and healthy eating—Mayo Clinic
Gut microbes important for serotonin production—Medical News Today
Adopt a Mediterranean diet now for better health later—Harvard Health Publishing
5 Diet changes supported by evidence—McMaster University’s Optimal Aging Portal
Does diet influence mental health? Assessing the evidence--Medical News Today
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