Phytonutrient Diversity – Challenge: Can you eat 50 different plant foods in a week?

Updated: Mar 30

The latest findings around the gut microbiome are showing that it is more valuable for your immune system and overall health to have diversity in the organisms. Similarly, recent research is showing that botanical diversity in our diets has a more protective role compared to larger amounts of foods with fewer phytochemicals. What this means is that we should be aiming to have variety in our plant-food choices – variety of vegetables, fruits, nuts and seeds as well as herbs and spices. This is also a great strategy to reduce the risk of developing food sensitivities which are more common when we over-do staple foods.

Some benefits of high botanical diversity diet:

  1. Significant reduction in DNA oxidation (1) There is a positive correlation between the number of unique plants we eat and microbial diversity, regardless of whether you are vegan, vegetarian or omnivore (2)

  2. Those who ate more than 30 types of plants per week had reduced abundance of antibiotic resistance genes (2)

  3. Eating a higher diversity of brightly coloured plant foods has a dramatic effect on short chain fatty acid (SCFA) production (3)

  4. By including a variety of colours in your diet, you are creating an environment with many health benefits: improved detoxification, hormone health, liver support, cardiovascular health, brain health and more.

CHALLENGE: Can you eat at least 50 different plant foods in 1 week?

For 1 week, keep track of every different food you eat, aiming for more than 50 selections of every colour (red, orange, yellow, green, purple/blue).

How to count them:

  1. red and white onions count as 2 different foods; as do red and white cabbage

  2. bread and pasta count as just one food: wheat

  3. herbs, spices and oils each count as individual ingredients

  4. include all plant-foods: vegetables, fruits, nuts and seeds, beans and legumes, grains, fat and oils, herbs and spices.

You can track your foods simply with a note in your phone, or use the attached PDF:

To help with your tracking, here are food ideas from each colour.

Eating the rainbow for a variety of phytonutrients:

RED Benefits: anti-cancer, anti-inflammatory, heart health, hormone health, liver healthAppleGoji berryRaspberryBeetOnionRed PepperBlood orangePlumStrawberryCraberryPomegranateRooibos teaCherryRadicchioTomatoPink grapefruitRadishWatermelon

ORANGE Benefits: anti-cancer, anti-bacterial, Immune health, reproductive health, skin healthApricotNectarinePumpkinBell pepperOrangeSquash (acorn, butternut, winter)CantaloupePapayaTangerineCarrotPersimmonTurmeric rootMangoPeachYam

YELLOW Benefits: anti-cancer, anti-inflammatory, cell protection, cognition, eye health, heart health, vascular healthAppleGingerPineappleAsian pearGrapefruit/td>StarfruitBananaMelonSummer squashCornMilletYellow pepper

GREEN Benefits: anti-cancer, anti-inflammatory, brain health, hormone balance, heart health, liver healthArtichokeCabbageGreen teaAsparagusCeleryGreens (arugala, chard, collard, dandelion, kale, lettuce, spinach)AvocadoCucumberLimeBell pepperEdamameOkraBok choyGranny smith appleOlivesBroccoliGreen beansPearBrussels sptroutsGreen peasZucchini

BLUE/PURPLE/BLACK Benefits: anti-cancer, anti-inflammatory, cognitive health, heart healthBerries (blue, black, boysenberry, marionberry)EggplantPlumCabbage (purple)FigPotato (purple)Carrot (purple)GrapesPrunesCauliflower (purple)Kale (purple)RaisinsChard (purple)OlivesRice (black or purple)

WHITE/TAN/BROWN Benefits: anti-cancer, antimicrobial, gastrointestinal health, heart health, liver health, hormone healthCauliflowerJicamaSauerkrautCocoaLegumes (chickpeas, dried beans or peas, lentils, hummus, refried beans)Seeds (flax, hemp, sesame, sunflower)CoconutMushroomsSoyCoffeeNuts (almond, cashew, pecan, walnut)TahiniDatesOnionTeaGarlicPearWhole grains (barley, brown rice, oat, quinoa, rye, spelt, wheat)

What’s Next?

Please share your chart with me, and whether this changed the way you ate this week. It takes a little extra effort to break your usual habits with food selection and grocery shopping, but it’s a very simple way to help your gut microbiome, which based on the multitude of recent studies is truly the centre of your health.

Book an appointment with Dr. Darou online. Contact us: 416.214.9251,


Please note that content on this website is intended for informational purposes only, and is not intended as a substitute for the advice provided by your physician or other healthcare professional, not is it meant to diagnose or treat a health problem, symptom or disease. Always speak with your physician or other healthcare professional before taking any medication or nutritional supplement, or using any treatment for a health problem. If you have or suspect that you have a medical problem, contact your health care provider promptly. Do not disregard professional medical advice or delay in seeking professional advice because of something you have read on this website. Information provided on this website DOES NOT create a doctor-patient relationship between you and any doctor affiliated with our website.

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