Potato. Neutral

 Here’s a clear, evidence-based summary of what Michael Greger actually says about potatoes and lifespan:

1) 

Whole (non-fried) potatoes do not shorten your life

• Large studies show no link between potato intake and overall mortality.  
• When researchers adjust for lifestyle factors (smoking, diet, etc.), the apparent risk disappears. 
  👉 Greger’s takeaway: potatoes are basically neutral for lifespan.

2) 

Fried potatoes are the main problem

• French fries are associated with higher risk of early death and disease (e.g. cancer).  
• Even a few servings per week may significantly increase risk. 
  👉 The issue isn’t the potato—it’s deep frying, oil, salt, and processing.

3) 

They’re not a “longevity food” either

• Unlike beans, whole grains, or greens, potatoes don’t clearly extend life.
• Greger often frames them as a “missed opportunity”—a plant food that’s neutral instead of beneficial.  

✅ Bottom line (Greger-style):

• Boiled/baked potatoes → neutral (fine, not harmful)
• French fries/processed potatoes → harmful
• For longevity → better to prioritise other whole plant foods

If you want, I can compare potatoes vs sweet potatoes vs rice for health/longevity—that’s where things get more interesting.