Sodium: content limited to what we believe we need to know about sodium in our daily life, based on our experience and readings.
All words below in italic are quoted from the book Salt
unless otherwise stated.
Man cannot survive without
[...] sodium. Before salt became a trading commodity early man got all the
sodium he needed through eating fish, shellfish and meat
(p26) >> access the Salt book
2.5 grams of sodium a day
(p81) as the recommended intake of a sedentary adult.
Such level needs to be increased when perspiration increases as perspiring translates into a loss of sodium which has to be replaced.
>> access the Salt book
Typically sodium is ingested when we eat salt. Some foods however do contain sodium in various amounts.
For example, fish and seaweed contain more sodium than other food types. Example: On a tin of tuna chunks in springwater sodium per 100g is listed as: 178mg
My current diet is based on fresh food or home-based cooking. So I do not have to consider the salt added to processed foods.
I use a container as a guide with a measure corresponding to a quantity of 6g of iodised rock salt. This would normally be my maximum quantity for the day.
When on our long and slow bike ride, I take extra rock salt which I suck on demand.
How much salt is too much for me? I rely on my body to let me know: whether weakness in the legs when bike riding, or feeling a bit off, my tongue if pale is a good indication that I need salt.
This seems to work for me: I used to dehydrate a lot as a toddler, also as a tennis competitor as a teenager, and up until the beginning of this new diet around 2013.
Since then 40+ degrees temperature on a bike ride are no longer a dehydration risk (although not necessarily a pleasant temperature to ride in either :)
Try and find out what works for you given your health condition, activity level, and the type of processed food ie hidden salt/sodium you already eat.