This is a bookmarking post. Jason Sandeman is a chef who has a couple of web-sites at Well Done Chef! and Jason Sandeman — Real Food For Your Life. He has Latent Autoimmune Diabetes of Adulthood (LADA), which has resulted in a total loss of his pancreatic beta cells which means that he has to take insulin.
Now, it's generally believed in low-carb circles (and by myself) that people with Type 1 Diabetes Mellitus (T1DM) should minimise their intake of sugary & starchy carbohydrates as these promote wild fluctuations in blood glucose. See The problem with Diabetes.
Jason wrote the following comment on Richard Nikoley's blog. The relevant part is as follows:-
"Even more weird – now that I have introduced the starches into the diet – I have actually got better control now. I thought my insulin needs would go up – but they haven’t. They’ve gone down."
To which I replied:-"How about this for an explanation? You now have a well-controlled glucose input to your circulation via diet, which has suppressed the poorly-controlled glucose input to your circulation via hepatic glucose production."
Hepatic glucose production (HGP) is increased by Glucagon, Cortisol & Adrenaline/Epinephrine. These are secreted as blood glucose level falls below certain values in order to keep our brains alive. See Blood Glucose, Insulin & Diabetes.
As keeping our brains alive is rather important (!), the mechanism is fairly crude in operation and blood glucose can overshoot in a positive direction, as a bit of glycation is less harmful than brain death. See "Funny turns": What they aren't and what they might be. Hyperglycaemia requires insulin to lower blood glucose back to the normal range.
Therefore, eating some (but not too much) sugar & starch can result in lower blood glucose level and lower insulin secretion. Eating fibre/fiber (a carbohydrate) is also good for keeping blood glucose low, as only just mentioned in Fiber and Insulin Sensitivity. Ain't the human body weird?
Tampilkan postingan dengan label Starchy carbs. Tampilkan semua postingan
Tampilkan postingan dengan label Starchy carbs. Tampilkan semua postingan
Jumat, 20 April 2012
Sabtu, 12 Desember 2009
How many working brain cells do researchers have?
Apparently (according to a Japanese study referred to in Am I Missing Something??? ), eating/drinking lots of sugary & starchy carbohydrate causes postprandial hyperglycemia (high blood glucose after meals) in people with type 2 Diabetes. No sh*t, Sherlock! Postprandial hyperglycemia "causes damage to blood vessels, inflammation and oxidation and these cause clogged vessels and heart attacks." I think we're all in agreement that postprandial hyperglycemia is BAD. So, how to tackle this thorny problem? By pharmacological approaches i.e. drug therapies. Like, Duh!
And what is Diabetes-UK's (& the ADA's) dietary advice to people with type 2 Diabetes?
"The actual amount of carbohydrate that the body needs varies depending on your age, weight and activity levels, but it should make up about half of what you eat and drink." & under Ten steps to eating well:
"At each meal include starchy carbohydrate foods
Examples include bread, pasta, chapatis, potatoes, yam, noodles, rice and cereals. The amount of carbohydrate you eat is important to control your blood glucose levels." Like, Duh!
I've been doing a bit of research on methylglyoxal (MG) as a result of reading Methylglyoxal on Atkins... Uh oh! Apparently it's very toxic, therefore ketogenic diets are BAD, mmm-kay? MG causes Insulin Resistance and Advanced Glycation End-products which are both deemed to be undesirable.
Consider this: MG is a glycolysis (conversion of glucose to pyruvate) inhibitor. As MG inhibits glycolysis in cells, uptake of Blood Glucose by cells decreases. Oh, look. Cells have become Insulin Resistant! As uptake of Blood Glucose by cells decreases, Blood Glucose rises. Oh, look. Increased Advanced Glycation End-products! It's bleedin' obvious (to anyone with a sufficient number of working brain cells) that, on a high-carb diet, MG is toxic. It's a no-brainer that MG's toxicity disappears on a low-carb/keto diet, when you actually want cells to burn fatty acids/ketones rather than glucose. Like, Duh!
In fact, strangulating the glucose pathway in cells may have benefits. See Cancer.
Here's another one. According to Progressive bone mineral content loss in children with intractable epilepsy treated with the ketogenic diet (KD), "The KD resulted in progressive loss of BMC." And yet, just above, "Growth and bone health status were suboptimal as were serum 25-OHD concentrations and dietary intake of calcium and vitamin D." Like, Duh!
And what is Diabetes-UK's (& the ADA's) dietary advice to people with type 2 Diabetes?
"The actual amount of carbohydrate that the body needs varies depending on your age, weight and activity levels, but it should make up about half of what you eat and drink." & under Ten steps to eating well:
"At each meal include starchy carbohydrate foods
Examples include bread, pasta, chapatis, potatoes, yam, noodles, rice and cereals. The amount of carbohydrate you eat is important to control your blood glucose levels." Like, Duh!
I've been doing a bit of research on methylglyoxal (MG) as a result of reading Methylglyoxal on Atkins... Uh oh! Apparently it's very toxic, therefore ketogenic diets are BAD, mmm-kay? MG causes Insulin Resistance and Advanced Glycation End-products which are both deemed to be undesirable.
Consider this: MG is a glycolysis (conversion of glucose to pyruvate) inhibitor. As MG inhibits glycolysis in cells, uptake of Blood Glucose by cells decreases. Oh, look. Cells have become Insulin Resistant! As uptake of Blood Glucose by cells decreases, Blood Glucose rises. Oh, look. Increased Advanced Glycation End-products! It's bleedin' obvious (to anyone with a sufficient number of working brain cells) that, on a high-carb diet, MG is toxic. It's a no-brainer that MG's toxicity disappears on a low-carb/keto diet, when you actually want cells to burn fatty acids/ketones rather than glucose. Like, Duh!
In fact, strangulating the glucose pathway in cells may have benefits. See Cancer.
Here's another one. According to Progressive bone mineral content loss in children with intractable epilepsy treated with the ketogenic diet (KD), "The KD resulted in progressive loss of BMC." And yet, just above, "Growth and bone health status were suboptimal as were serum 25-OHD concentrations and dietary intake of calcium and vitamin D." Like, Duh!
Rabu, 31 Desember 2008
How to lose body-fat healthily.
Previous blog posts have been about Carbohydrates, Fats & Proteins. However, when you go shopping, you buy food. So this blog post is going to be about food. Updated!
1) If you're eating a high-carb diet, eat 6 small meals or 3 meals and 3 snacks per day to keep your blood glucose relatively stable. I used to believe that it also kept your metabolic rate high, but I now know this to be a myth. If you're the type of person who gets lowish blood glucose in the mornings (which may make you ravenously hungry and therefore highly likely to buy junk food when you're away from home), skipping breakfast is not advisable. If you're the type of person who isn't satisfied by small meals/snacks, a small number of large meals (Intermittent Fasting) is a better option.
2) Meals and snacks should contain proteins, fats and fibrous carbs.
3) Slow sugary/starchy carbs can be eaten in meals/snacks at breakfast and before/after workouts/exercise/intense activity. If/when you are sedentary, keep slow sugary/starchy carbs to a minimum. Keep fast sugary/starchy carbs to a minimum (except for the occasional treat or post-workout) as they can cause large fluctuations in blood glucose and insulin levels. The more intense exercise you do, the more slow sugary/starchy carbs you can eat.
4) Drink >1.5 litres of no-added-sugar watery drinks per day. If your urine is darker than straw, drink more. If you're weeing too often, drink less.
5) Balance your omega-6 and omega-3 essential fatty acids (EFAs) by eating about 100g of omega-3 rich oily fish (sild, sardines, pilchards, mackerel, herring, salmon, trout, fresh tuna etc) per day or supplement with fish oil capsules such that you get at least 2g of EPA+DHA per day. Please note that tinned tuna contains virtually zero omega-3 fat.
If you're vegetarian or vegan, eat 25g (women) or 50g ( men) of powdered linseeds (a.k.a. flaxseeds) per day with lots of fluids or supplement with flaxseed oil in bottles/capsules such that you get at least 10g (women) or 20g (men) of flaxseed oil per day.
6) Eat 2 to 3 portions of low-sugar fruits per day - preferably before meals/snacks. Minimise your consumption of high-sugar fruits.
Proteins are:- Meats, poultry, fish, eggs, cheese, Quorn, seeds, nuts, legumes (peas, beans & lentils).
Fibrous carbs are:- All vegetables that grow above ground level, bulbs (onions, leeks, garlic etc) and "vegetable" fruits (tomatoes, peppers, cucumbers/courgettes, aubergines, avocados, olives etc).
Slow sugary/starchy carbs are:- All-bran, no-added-sugar muesli, oats, sweet potatoes, lightly-boiled new potatoes eaten hot, cold or refrigerated, Basmati rice, non-overcooked legumes & root veggies, lumpy wholegrain rye breads, Burgen/Vogel's soya & linseed breads.
Fast sugary/starchy carbs are:- White wheat breads, wholemeal wheat breads, most breakfast cereals including Shredded Wheat, Weetabix, Cheerios, Grapenuts etc, sugar, sweets, chocolate, cakes, biscuits, cereal bars, sweetcorn, overcooked tubers e.g. jacket potatoes, overcooked root veggies, overcooked legumes e.g. baked beans.
High sugar fruits are:- Ripe & over-ripe bananas, grapes, pineapples, sweet apples, sweet pears, sultanas, raisins, currants and any dried fruits with added sugar.
Low sugar fruits are:- Berries, stone fruits, citrus, Granny Smith apples, Conference pears. Dried apple rings, apricots, pear halves, peach halves and prunes without added sugar are high in sugar but they release that sugar very slowly.
Fats are sats, monos and the EFAs mentioned above. Butter is high in sats and monos. Olive oil & spreads are high in monos. Sunflower/safflower/corn oils & spreads are very high in omega-6 EFAs - minimise your consumption of these. Don't fry or roast with high-EFA oils as they oxidise and convert into trans-fats too quickly. Meats contain sats, monos and some EFAs. Minimise your consumption of anything with the word "hydrogenated" in the ingredients list.
Some foods fall in-between categories like yellow bananas which are medium speed sugary/starchy carbs. Green bananas are slow carbs and black bananas are fast carbs.
Depending on your insulin sensitivity, speed of metabolism and exercise levels, you may get away with eating fast sugary/starchy carbs - you'll just have to "suck it and see".
One final bijou tip-ette:- Avoid walking down "dodgy" supermarket aisles (confectionery, cereals, booze, fizzy drinks) as "What the eye don't see, the heart don't grieve over".
Happy New Year folks!
Cont'd on How to lose body-fat healthily, Part 2.
1) If you're eating a high-carb diet, eat 6 small meals or 3 meals and 3 snacks per day to keep your blood glucose relatively stable. I used to believe that it also kept your metabolic rate high, but I now know this to be a myth. If you're the type of person who gets lowish blood glucose in the mornings (which may make you ravenously hungry and therefore highly likely to buy junk food when you're away from home), skipping breakfast is not advisable. If you're the type of person who isn't satisfied by small meals/snacks, a small number of large meals (Intermittent Fasting) is a better option.
2) Meals and snacks should contain proteins, fats and fibrous carbs.
3) Slow sugary/starchy carbs can be eaten in meals/snacks at breakfast and before/after workouts/exercise/intense activity. If/when you are sedentary, keep slow sugary/starchy carbs to a minimum. Keep fast sugary/starchy carbs to a minimum (except for the occasional treat or post-workout) as they can cause large fluctuations in blood glucose and insulin levels. The more intense exercise you do, the more slow sugary/starchy carbs you can eat.
4) Drink >1.5 litres of no-added-sugar watery drinks per day. If your urine is darker than straw, drink more. If you're weeing too often, drink less.
5) Balance your omega-6 and omega-3 essential fatty acids (EFAs) by eating about 100g of omega-3 rich oily fish (sild, sardines, pilchards, mackerel, herring, salmon, trout, fresh tuna etc) per day or supplement with fish oil capsules such that you get at least 2g of EPA+DHA per day. Please note that tinned tuna contains virtually zero omega-3 fat.
If you're vegetarian or vegan, eat 25g (women) or 50g ( men) of powdered linseeds (a.k.a. flaxseeds) per day with lots of fluids or supplement with flaxseed oil in bottles/capsules such that you get at least 10g (women) or 20g (men) of flaxseed oil per day.
6) Eat 2 to 3 portions of low-sugar fruits per day - preferably before meals/snacks. Minimise your consumption of high-sugar fruits.
Proteins are:- Meats, poultry, fish, eggs, cheese, Quorn, seeds, nuts, legumes (peas, beans & lentils).
Fibrous carbs are:- All vegetables that grow above ground level, bulbs (onions, leeks, garlic etc) and "vegetable" fruits (tomatoes, peppers, cucumbers/courgettes, aubergines, avocados, olives etc).
Slow sugary/starchy carbs are:- All-bran, no-added-sugar muesli, oats, sweet potatoes, lightly-boiled new potatoes eaten hot, cold or refrigerated, Basmati rice, non-overcooked legumes & root veggies, lumpy wholegrain rye breads, Burgen/Vogel's soya & linseed breads.
Fast sugary/starchy carbs are:- White wheat breads, wholemeal wheat breads, most breakfast cereals including Shredded Wheat, Weetabix, Cheerios, Grapenuts etc, sugar, sweets, chocolate, cakes, biscuits, cereal bars, sweetcorn, overcooked tubers e.g. jacket potatoes, overcooked root veggies, overcooked legumes e.g. baked beans.
High sugar fruits are:- Ripe & over-ripe bananas, grapes, pineapples, sweet apples, sweet pears, sultanas, raisins, currants and any dried fruits with added sugar.
Low sugar fruits are:- Berries, stone fruits, citrus, Granny Smith apples, Conference pears. Dried apple rings, apricots, pear halves, peach halves and prunes without added sugar are high in sugar but they release that sugar very slowly.
Fats are sats, monos and the EFAs mentioned above. Butter is high in sats and monos. Olive oil & spreads are high in monos. Sunflower/safflower/corn oils & spreads are very high in omega-6 EFAs - minimise your consumption of these. Don't fry or roast with high-EFA oils as they oxidise and convert into trans-fats too quickly. Meats contain sats, monos and some EFAs. Minimise your consumption of anything with the word "hydrogenated" in the ingredients list.
Some foods fall in-between categories like yellow bananas which are medium speed sugary/starchy carbs. Green bananas are slow carbs and black bananas are fast carbs.
Depending on your insulin sensitivity, speed of metabolism and exercise levels, you may get away with eating fast sugary/starchy carbs - you'll just have to "suck it and see".
One final bijou tip-ette:- Avoid walking down "dodgy" supermarket aisles (confectionery, cereals, booze, fizzy drinks) as "What the eye don't see, the heart don't grieve over".
Happy New Year folks!
Cont'd on How to lose body-fat healthily, Part 2.
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