In today's digital age, it's nearly impossible to browse social media without encountering discussions about the dangers of inflammation or the benefits of an anti-inflammatory diet. But what exactly is inflammation, how can we recognize it, and what steps can we take to address it?
Raj Punjabi-Johnson and Noah Michelson, co-hosts of HuffPost's "Am I Doing It Wrong?" podcast, explored these questions with Dr. Tamiko Katsumoto, a clinical associate professor in the division of immunology and rheumatology at Stanford University and a board-certified lifestyle medicine physician. Below, we summarize key insights from their conversation.
Defining Inflammation
Dr. Katsumoto describes inflammation as "the body's response to a danger signal or a damaging signal, followed by a repair process." It involves the immune system defending the body and resolving insults. Not all inflammation is harmful; acute inflammation, such as that from an infection or wound, is short-term and essential for survival. "Without inflammation, we would be dead — it keeps us alive," she emphasizes.
Chronic Inflammation: A Subtle Threat
Chronic inflammation, however, is more insidious. "Sometimes that flies a little bit below the radar, and we may not fully be aware that it's happening," Katsumoto notes. The most common symptom she hears from patients is fatigue: "People that say, oh, I'm just so tired. I have no energy." This long-term inflammation, driven by environmental exposures, diet, and lifestyle, contributes to many Western diseases, including Alzheimer's, heart disease, depression, and autoimmune conditions like rheumatoid arthritis and lupus. "The vast majority of our diseases are driven by inflammation, maybe like 80% or so," she adds.
Lifestyle Factors and Control
Fortunately, many of these inflammation-driven diseases are linked to lifestyle factors we can influence. "We can't control everything about what we're exposed to, but we can control lifestyle factors that can be very, very protective of this inflammation," Katsumoto says.
The Gut Microbiome Connection
The first step to reducing harmful inflammation is maintaining a healthy gut microbiome. "It turns out that probably about 70% of our immune system resides in the gut," she explains. To keep the microbiome healthy, we need to feed it fiber, which is found only in plants. "Animal products do not have fiber. So we need to have plants to feed that gut ... to create a very happy, healthy, diverse group of bugs that are going to keep what's called immune homeostasis."
Katsumoto notes that 95% of Americans are deficient in fiber. She recommends consuming 30 different kinds of plants per week — the "magic number" for gut health — including fruits, vegetables, legumes, herbs, and nuts. "Fiber gets fermented by these microbes in our gut, and they produce these molecules that are called short-chain fatty acids. These short-chain fatty acids are really important in keeping our immune system in check and dampening it so it doesn't overreact."
Moderation Over Perfection
While Katsumoto advises avoiding ultra-processed foods as much as possible, she emphasizes moderation. "It's really focusing on the whole food plants as much as possible, [but] it doesn't mean you have to be a saint." She adds, "I never draw lines in the sand. I think that's not helpful ... We don't demonize anything. Yes, we all will eat some of those ultra-processed foods sometimes, and that's okay." The bottom line: "If we can really try to keep our gut as happy as possible by really loading up with a lot of diverse plants, right? And, occasionally, some animal [products] are OK. But the plants are where the money is. And the plants are what are anti-inflammatory ... and there's been so much data suggesting that plants are super important for health and longevity."
For more on fighting chronic inflammation, listen to the full episode of "Am I Doing It Wrong?" available on podcast platforms and YouTube.
