Tim Spector, a professor of epidemiology at King’s College London, is encouraging anyone who experiences irregular bowel movements, bloating or heartburn after meals to seek medical advice. This is becasue these symptoms could be signs of poor gut health. In an interview with Fortune Well, Professor Spector explained individuals who are obese or who have diabetes, are more likely to face gut-related issues.
Stressing the importance of diet, he noted that it’s possible to have an unhealthy gut without noticeable symptoms—particularly if your diet is rich in meat and ultra-processed foods, which he strongly recommends avoiding. He said: “Not everyone has symptoms. Not everyone knows that they have problems.” Because of this, he said that eating 30 plants is something he does, and wants others to do too to ensure you have a thriving gut microbiome.
Although the number may appear large, he explained that it enables you to eat a variety of fibre-rich foods, which support a healthy gut. Spector, the founder of ZOE , also noted that there are plenty of options to help reach the target of 30, and shared an extensive list on their website.
This includes:
asparagus
broccoli
cabbage
carrots
chicory
eggplant
Jerusalem artichokes
red onion
rocket
spinach
sweet potatoes
zucchini
apples
avocados
bananas
bell peppers
blueberries
figs
kiwis
oranges
raspberries
tomatoes
black beans
broad beans
butter beans
chickpeas
green beans
kidney beans
lentils
peas
pinto beans
soybeans or edamame
brown rice
bulgar wheat
oats
quinoa
rye flour
whole wheat flour
almonds
Brazil nuts
cashews
pine nuts
pistachios
walnuts
chia seeds
flaxseeds
hemp seeds
pumpkin seeds
sesame seeds
sunflower seeds
basil
cilantro
mint
oregano
parsley
rosemary
sage
tarragon
allspice
black pepper
cumin
ginger
nutmeg
paprika
saffron
turmeric
The professor recommends incorporating three servings of fermented foods into your diet to support gut and overall health. Options include sauerkraut, kimchi, yogurt, and kefir. However, he advises against consuming them too late in the evening, noting that he personally avoids eating at night to give his gut time to rest. He explained that when you stop eating, your gut microbes get a chance to pause and do their work and eating late can interfere with this process.
In fact, speaking on the ZOE podcast, Tim said: “It may be one that people haven’t thought about as much because it’s a bit different but what I’m trying to emphasise is that any fermented food, that includes things like yoghurt, kefirs, regular sauerkraut, kimchis, misos. All of these have anti-inflammatory studies and these have been shown in multiple studies in both test tubes and in humans.
“The most recent studies often use multiple different ferments rather than just focusing on one. I think it’s really important that people learn to diversify what they’re eating because each ferment will have a different set of microbes in them.
“So yoghurts will have say three microbes and some of these more complex krauts and kimchis can have up to 20 or 30 in some kombucha so red sauerkraut is just one of an example of things that you can add to your meal tiny amounts. A real classic study in Stanford showed that when they asked volunteers to try and get five small portions a day of ferments, they could really show in two weeks a dramatic, significant reduction in inflammation levels.”
