Robert Nelsen

Robert Nelsen

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Co-founder of ARCH Venture Partners; influential biotech VC behind numerous startups and known for bold industry bets.

Decade-Long Quest to Break Blood-Brain Barrier Highlights Biotech Challenges
SocialMar 27, 2026

Decade-Long Quest to Break Blood-Brain Barrier Highlights Biotech Challenges

When we seeded Denali the idea was to break the curse of the blood/brain barrier. It took a decade and tons of faith and money. Biotech is hard. Curing diseases is hard. This is a good summary. ...

By Robert Nelsen
Sauna Benefits Need BDNF Study; Cold Post‑Sauna Weak
SocialMar 19, 2026

Sauna Benefits Need BDNF Study; Cold Post‑Sauna Weak

Sauna data interesting. Need a study that actually measures BDNF etc and clinical outcomes to really prove. But I am doing it. Low risk. The evidence for cold afterwards is weak

By Robert Nelsen
Stable FDA Rules Essential for Patient Safety and Investment
SocialFeb 13, 2026

Stable FDA Rules Essential for Patient Safety and Investment

To invest the billions it costs to make new medicines, companies need to be able to trust the word and actions of the FDA. To capaciously change the rules at the end of the game ultimately hurts patients.

By Robert Nelsen