@JenniferM55 re your dizziness I experienced this when went keto 6 years ago - I started out with a month of 23 hour fasts just one meal a day and had very bad dizzy spells. Main reason for me was that I was still on blood pressure meds and someone here kindly suggested I check my blood pressure. I was shocked to see really low readings about 90/60 and had to come off my bp meds and never needed to go back to them as usually now 108/70. Worth checking if on meds and speaking to Drs. I also was experiencing bad leg cramps and found upping my electrolytes especially more salt and magnesium solved this and helped with the dizziness. Trouble is that real low carb food often means you don't retain salt so you may need a bit more. Not sure if these tips will help you but it's the way I managed my dizziness and cramps. I still supplement with magnesium and use salt on my food.
Thank you
@shelley262 for your information. Think you are correct! I take 5mg Bisoprolol tablet every morning. Luckily, my cardiologist doesn't have any concerns regarding any disease with my 70 year old heart. I have been taking the Bisoprolol (and Apixaban blood thinner) because of high blood pressure which was seemingly attributed, or partly attributed, to a leaky arterial valve. Almost a year ago to this day I had a replacement arterial valve inserted at Papworth, the cause of the leaky valve was probably genetic. Six weeks ago I had a check up with the cardiologist who after a couple of tests (one was 24 hour BP monitoring), his conclusion was that I was okay, and to "Come back next year!".
As for electrolytes, I have to admit I'm a little scared of them. I've had 3 episodes of arterial fibrillation over the past 5 years where I've been hospitalised, so I'm a bit hesitant of taking magnesium and potassium supplements as I believe they can upset the heart's rhythm. But I have been 'testing the water' with them. For the past month I've been taking 500.0mg of Magnesium (Oxide). I think I might increase this to having another 500mg tablet at bedtime - but I want to make sure I'm home when I test this out (for obvious reasons

).
I try to put as much Pink Himalayan salt on my foods as I can stand. As for potassium, I'm still working up to that. I do have awful leg cramps at night, normally when I stick my legs out from under the duvet and they get cold.
You could be absolutely right about low blood pressure, all my life my blood pressure was seemingly associated with my weight (since 1st June I've lost over 2 stone, and hoping to lose another 2 stone). I don't check my BP, though I know I should, but I do check my heart rate with an oximeter every morning which is around 55 to 65 for AF reasons. Thank you
@shelley262 again for your concern, you've given me something to think about. It's always good when another voices those concerns that rattle round in head.
Took my husband to have bloods taken this morning, so it was easy to delay eating.
At 2pm on our return I had a G&T with a packet of pork scratchings.
At 3.30pm had a large dish of hm chicken and veg soup with double cream.
5pm had 2 squares of 90% chocolate.
Haven't been really hungry after the soup, so it's been a very low carb day today which I make to be 12g of carbs.