Your comments in this thread are inappropriate and untimely. We do not yet know what caused Seth's collapse, and to jump to blame his experiments because you disagree with his methods is shortsighted.
This is not science. You are drawing a conclusion to support your own preconceived medical notions based on incredibly limited evidence.
The world does not need more armchair coroners, claiming they've determined causes of death in comment threads hours after someone has passed.
His unusual diet may have been connected to his death, and it's certainly reason for concern, but you don't know anything about the causality.
or just due to plain old heatstroke and/or going beyond your physical limit (on that given day and for you given overall condition for that day). You should at least have mentioned whether you know this hills. I hike a lot in the East Bay, and if i remember the Sat was pretty sunny.
It was not heatstroke.
"Going beyond your physical limit" -- what, exactly, does that mean? Thousands of times a day, people get on treadmills in cardiologists' offices, and are taken to their physical limit with a "maximal effort stress test." Even this doesn't precipitate life-threatening complications unless cardiovascular disease is present.
There are some genetic blood disorders that can cause sudden death during extremely heavy exertion (e.g. professional football drills) at altitude, but they are very rare in caucasians, and Berkeley's hills don't qualify as "altitude."