Thomas Seyfried has spent over 30 years studying cancer. His message? Cancer is preventable.
Here are his 7 prevention rules:
Prioritize Sleep
Sleep is when your body goes into repair mode — especially your mitochondria, the energy centers of your cells.
The more high-quality sleep you get, the better your body can heal, recover, and protect against metabolic damage and even cancer.
Here are 4 powerful sleep hacks from Dr. Eric Berg to help you optimize your rest:
Regular Exercise
Dr. Seyfried says regular exercise is crucial for cancer prevention.
It boosts mitochondria, lowers inflammation, and supports autophagy.
Easy options:
- Walk
- Swim
- Lift weights
Just move daily — any activity helps.
Reduce Stress
Chronic stress harms your mitochondria and fuels inflammation — two major cancer triggers.
To lower stress:
- Try meditation or breathwork
- Prioritize rest
- Consider natural supplements (like L-theanine)
Here’s a quick video where my partner and I break it down:
Fasting
Seyfried is a big advocate for both intermittent fasting & longer-term fasting.
Fasting reduces blood glucose & enhances ketone production…
Which cancer cells cannot efficiently use.
This helps inhibit their growth & promotes autophagy (the body’s process of cleaning out damaged cells).
Reduce Inflammation
Chronic inflammation is a key driver of cancer.
Dr. Seyfried recommends an anti-inflammatory lifestyle, including:
- Cutting out processed foods and sugar
- Eating anti-inflammatory foods like turmeric, fatty fish, and green tea
- Managing stress through meditation, deep breathing, and supportive supplements
Small daily changes = big long-term protection.
Ketogenic Diet
Dr. Seyfried promotes a ketogenic diet to fight cancer by starving cancer cells of glucose.
This diet is:
- High-fat
- Moderate-protein
- Low-carb
It helps your body burn fat and ketones instead of sugar — which cancer cells depend on.
Eat foods like:
- Nuts, olive oil, avocados
- Low-carb veggies
- Lean proteins like fish
- Maintain Stable Blood Sugar
High glucose and insulin levels can fuel cancer growth.
Dr. Seyfried recommends avoiding:
- Sugar
- Refined carbs
- Processed foods
Keeping blood sugar stable reduces inflammation and lowers cancer risk.
