Try drinking extra water (coffee, tea, etc doesn't count). The body gets a lot of its water from food so if you IF you probably need more water.

I would lay off the fasts for awhile. John Durant and I see a doctor that uses fasting to gauge the health of his patients. He can tell if his patients have been following a good diet for awhile by how they react to a fast. If you feel hungry or stressed out you need to go back to just eating paleo. As far as I'm concerned, fasting is an advanced technique that should be approached with caution. You need to nourish first, fast later.

Intermittent Fasting is somewhat stressful on the body and the stress manifests itself differently for different people. Try eating at 6pm evening meal and then eat the next morning at 10am That will give you a 16 hour fast. You will eventually adapt to the longer fasts...but most people say that more time is not better in intermittent fasting. Once or twice a week is plenty.

I've never heard of this before and it hasn't happened to me. I IF usually ~16 hours at 5 days/week.

How long have you been doing IF? Perhaps IF for shorter periods of time and gradually increase the time.

I get another side effect - when I've done a slightly longer fast which includes a night near the end of the fast, I wake up early and can't get back to sleep. Normally I sleep like a log. I'm not lying in bed feeling hungry, I just can't sleep!

Before I was fat adapted, it was miserable now that I am, I feel energetic, sharp and happy when I skip a day at no point do I get hungry

I should clarify, that even adapted, my extremities get cold, a little stand up and move around fixes it. Your body goes into preservation mode around the 16 hr mark, this is when i get a little cold. if you do a multiple day fast, it goes away. alternately to exercise, simply break the fast at this point.

I eat only dinner except Mondays and Wednesdays when I eat nothing. I'll have coffee (mostly decaf) with heavy cream every morning and then water or green tea throughout the day. I feel fine, sleep fine, and I find weight comes off easier.

I've been considering fasting for months and have tried a few times, but I always ended up hungry and so ate lunch (or whatever meal).

Yesterday I skipped breakfast and unintentionally missed lunch and didn't even realize it until several hours later when I got more tea and saw someone eating in the breakroom at work. I still wasn't hungry, so I just didn't eat until dinner. I ended up fasting (drank several mugs of tea) for about 22 hours with no trouble.

I have been eating mostly primal for about 4-5 months.

I've been Paleo for 18 months or more, blood shot eyes increased ever since I went Paleo. Love this way of eating because EVERY other area of my life is better.

The Blood shot eye thing is of concern to me because issues with the eyes can mean something else is going on in the body.

I drink plenty of water train hard and sleep 8 to 10 hours per night. When I don't take high potency antioxidants and minerals i feel lethargic in the afternoon and often feel like napping. When i DO take the antioxidants and minerals i do not need to nap.

Eating: grass fed meat, loads of salmon, taking omega 3 oils, organic fruit and veg, nuts, 70% + dark choc. ZERO: grains, legumes, wheat. I tried some IF which feels great - still blood shot eyes (even pre- IF).

Ever since I started my family on Paleo they have started getting blood shot eyes too.

Advice / thoughts / found any info on this? I suspect there is a mineral missing / not quite getting enough.

This is a site that has loads of people commenting (back in 2005 during Atkins days) that when they went Low Carb they suddenly started getting blood shot eyes.

http://www.lowcarbfriends.com/bbs/main-lowcarb-lobby/190230-blood-shot-eyes.html