The Whey To Weight Loss (Part II)
Effects on serotonin, blood sugar regulation, and extra!
Although the above may just probably be the major mechanisms by which whey could help the dieter, there are several secondary results of whey that may assist in weight loss. For example, whey’s effects on serotonin ranges. Serotonin is so much certainly the such a lot studied neurotransmitter since it has been discovered to be concerned in a wide vary of psychological and biological functions. Serotonin ( also called 5-hydroxytryptamine or 5-HT) is involved with mood, anxiety, and urge for foods.
Elevated ranges of serotonin can cause relaxation and decreased anxiety. Low serotonin ranges are related with low mood, larger anxiety (hence the current popularity of the SSRI drugs such as Prozac and others), and poor urge for meals control. This is an extremely abbreviated description of all the functions serotonin performs in the human frame – many of which have yet to be fully elucidated – but a complete explanation is beyond the scope of this article.
Needless to say, Increased mind serotonin ranges are related with an advanced ability of folks to cope with stress, whereas a decline in serotonin process is associated with melancholy and anxiousness. Elevated levels of serotonin in the frame often result in the relief of depression, as neatly as substantial aid in pain sensitivity, nervousness and tension. It has also been theorized that a diet-induced construction up in tryptophan will construct up brain serotonin levels, while a vitamins designed for weight loss (e.g., a vitamin that reduces calories) may lead to a aid of mind serotonin levels due to diminished substrate for production and a reduction in carbohydrates.
Many different folks on a reduced calorie intake in an attempt to lose weight to in finding they are often ill tempered and more anxious. Reductions in serotonin may be partially to blame here. One recent glance at (The bovine protein alpha-lactalbumin increases the plasma ratio of tryptophan to the different large neutral amino acids, and in prone subjects raises brain serotonin activity, reduces cortisol concentration, and improves temper under rigidity. Am J Clin Nutr 2000 Jun;71(6):1536-1544) examined whether alpha-lactalbumin – a major sub fraction discovered in whey which has an especially top tryptophan content – would building up plasma Tryptophan levels as well scale back depression and cortisol concentrations in topics under acute rigidity considered to be inclined to pressure.
The researchers examined twenty-nine “highly stress-vulnerable subjects” and 29 “relatively stress-invulnerable” topics using a double blind, placebo-controlled study design. The study participants had been exposed to experimental stress after eating a vitamins enriched with either alpha-lactalbumin (found in whey) or sodium-caseinate, any other milk based protein. They researchers looked at:
* Diet-induced changes in the plasma Tryptophan and its ratio to different large neutral amino acids.
* Prolactin levels.
* Changes in temper and pulse rate.
* Cortisol levels (which were assessed before and after the stressor).
Amazingly, the ratio of plasma Tryptophan to the other amino acids tested was 48% higher after the alpha-lactalbumin nutrition than after the casein nutrition! This was accompanied by a lower in cortisol levels and higher prolactin focus. Perhaps most important and relevant to the average person reading this article, they found “reduced depressive feelings” when test subjects were put beneath stress.
They concluded that the “Consumption of a dietary protein enriched in tryptophan larger the plasma Trp-LNAA ratio and, in stress-vulnerable subjects, improved coping ability, probably through alterations in brain serotonin.” This impact was not seen in the sodium-caseinate group. If other analysis can confirm these findings, whey may turn out to be yet another safe and effective complement in the battle against melancholy and stress, as smartly as reduced serotonin levels due to dieting.
Although there is a long list of hormones involved in appetite regulation, a few of which have been mentioned above, serotonin appears to be a key player in the game. In general, experiments find increased serotonin availability or activity = reduced food consumption and decreased serotonin = building up food consumption. If whey can selectively increase serotonin levels above that of other proteins, it could be very helpful to the dieter.
Other possible advantages whey may confer to the dieter is improved blood sugar legislation (Frid AH, Nilsson M, Holst JJ, Bjorck IM. impact of whey on blood glucose and insulin responses to composite breakfast and lunch meals in type 2 diabetic subjects. Am J Clin Nutr. 2005 Jul;82(1):69-75.) which is yet another key area in controlling appetite and metabolism.
Finally, calcium from dairy merchandise has been found to be associated with a reduction in bodyweight and fat mass. Calcium is thought to influence energy metabolism as intracellular calcium regulates fat cell (adipocyte) lipid metabolism as well as triglyceride storage. It’s been demonstrated in several analysis the superiority of dairy versus non-dairy assets of calcium for improving body composition, and the whey fraction of dairy maybe the key.
The mechanism responsible for increased fat loss found with dairy-based calcium versus nondairy calcium has not is not fully understood but researchers looking at the issue theorized “… dairy sources of calcium markedly attenuate weight and fat gain and accelerate fat loss to a greater degree than do supplemental sources of calcium. This augmented impact of dairy products relative to supplemental calcium is likely due to additional bioactive compounds, including the angiotensin-converting enzyme inhibitors and the wealthy concentration of branched-chain amino acids in whey, which act synergistically with calcium to attenuate adiposity.”
It appears components in whey – a few of which have been mentioned above – are thought to act synergistically with calcium to enhance body composition (Zemel MB. Role of calcium and dairy products in energy partitioning and weight management. Am J Clin Nutr. 2004 May;79(5):907S-912S.).
Conclusion
Taken in isolation, none of these studies are so compelling that people will have to run out and use whey as some shape of weight loss nirvana. However, taken as a total picture, the bulk of the research seems to conclude that whey may in fact have some unique effects for weight loss and must be of great use to the dieter. More studies are clearly needed on the other hand.
So what is the practical application of all this information and how does the dieter put it to good use? Being the appetite suppressing effects of whey appear to last approximately 2-3 hours, it would seem best to stagger the intake throughout the day. For example, breakfast might be 1-2 scoops of whey and a bowl of oatmeal, and perhaps a few scoops of whey taken between lunch and dinner.
If whey does what the data suggests it does in the above, that should be the most effective method for maximizing the effects of whey on food (calorie) intake on subsequent meals as well as the other metabolic effects covered. If working out, the schedule may be different however and people should follow the pre and post nutrition recommendations made in my ebook “Muscle Building Nutrition” or advice easily found on the ‘net via the many sports nutrition and bodybuilding related web sites.
