T Nation

Preventing Gluconeogenesis

How many grams of carbs in a meal are necessary to spare protein and prevent gluconeogenesis? Of course it would vary depending upon activity level, but if anyone could provide general estimates (i.e. for a weight training session versus no physical activity), that would be great.

Interesting question. I would love to hear from someone who knows as well.

Also, does gluconeogenesis in some manner always occur with a meal that has no carbs, even if glycogen stores are full?

Or does following the Temporal Nutrition guidelines of c/p in the morning and f/p at night mean that some of the protein in the night meals gets converted to glucose? If so any idea how much?

giving you an exact number is about impossible.

In general any meal containing too much gluconeogenic amino acids will result in gluconeogenesis.

alanine, glutamate, aspartate, arg, asp, asn, cys, thr, ser to name a few.

really don’t worry about the contribution of gluconeogenesis, it will occur if you are eating.

agreed.
gluconeogenesis occurs because your BRAIN needs glucose . Your body is just trying to keep you alive…don’t fight it too hard.

I was likewise wondering about the Temporal Nutrition thing. By not consuming the carbs in the evening in preference of fat, does that mean the body will primarily make use of the fat for energy, or will it essentially ignore (not quite the right word) the fat and convert protein into glucose?

It has mostly to do with the liver being fed. the body can spare glycogen in its muscle.

I would say two pieces of fruit daily would keep glucogeneosis down, plus a pwo drink when glycogen is lowered.

Interesting question or not, it would be a shame if even one person’s progress was slowed because of any “conclusion” they reached on a topic such as this.

[quote]Dark_Knight wrote:
I was likewise wondering about the Temporal Nutrition thing. By not consuming the carbs in the evening in preference of fat, does that mean the body will primarily make use of the fat for energy, or will it essentially ignore (not quite the right word) the fat and convert protein into glucose? [/quote]

From what I remember, Dr Lowery’s temporal nutrition is based on the body’s decreasing sensitivity to insulin as the day progresses.