animaljack
New member
I read a post with some great info on T3 by Nandi in the Article forum and have a couple questions regarding its use concurrently with insulin.
In the article he states that "
Decreased Insulin Secretion
Insulin is well known as a lipogenic hormone. It promotes fat storage by facilitating the uptake of fatty acids by adipocytes, and reducing lipid oxidation in muscle tissue. Several studies have shown that thyroid hormone is associated with glucose intolerance resulting from decreased glucose stimulated insulin secretion (26).
This defect in insulin secretion is believed to result from an increase in the rate of apoptosis (programmed cell death) of pancreatic beta cells as a direct effect of thyroid hormone excess.(27) This process is reversible, since when thyroid hormone is withdrawn the rate of beta cell replication increases until homeostasis returns. However, there are conflicting studies regarding the effects of T3 on insulin. For example, Dimitriadis et al (28) showed a decrease in glucose stimulated insulin secretion, consistent with (25), but an increase in basal insulin. They also observed increased insulin clearance, with a compensatory increase in basal insulin secretion.
So if in fact the hyperthyroid state is associated with lower insulin levels, this could explain a portion of hyperthyroid stimulated lipolysis. The obvious downside here is that insulin is also an anabolic hormone. Basal insulin concentration is thought to limit the action of the ubiquitin-proteasome degradative pathway of muscle protein breakdown (29). Of course supplementing with insulin during T3 use would be counterproductive. However, as mentioned above, anabolic steroids inhibit ubiquitin-proteasome activity, so their use could counter any loss in muscle anabolism resulting from a drop insulin levels. "
If T3 decreases the body's insulin production/secretion then why would taking both insulin and T3 be a bad move?
I would appreciate input from any experts on the subject as I (was) planning on running both of them in my upcoming cycle.
Cheers
In the article he states that "
Decreased Insulin Secretion
Insulin is well known as a lipogenic hormone. It promotes fat storage by facilitating the uptake of fatty acids by adipocytes, and reducing lipid oxidation in muscle tissue. Several studies have shown that thyroid hormone is associated with glucose intolerance resulting from decreased glucose stimulated insulin secretion (26).
This defect in insulin secretion is believed to result from an increase in the rate of apoptosis (programmed cell death) of pancreatic beta cells as a direct effect of thyroid hormone excess.(27) This process is reversible, since when thyroid hormone is withdrawn the rate of beta cell replication increases until homeostasis returns. However, there are conflicting studies regarding the effects of T3 on insulin. For example, Dimitriadis et al (28) showed a decrease in glucose stimulated insulin secretion, consistent with (25), but an increase in basal insulin. They also observed increased insulin clearance, with a compensatory increase in basal insulin secretion.
So if in fact the hyperthyroid state is associated with lower insulin levels, this could explain a portion of hyperthyroid stimulated lipolysis. The obvious downside here is that insulin is also an anabolic hormone. Basal insulin concentration is thought to limit the action of the ubiquitin-proteasome degradative pathway of muscle protein breakdown (29). Of course supplementing with insulin during T3 use would be counterproductive. However, as mentioned above, anabolic steroids inhibit ubiquitin-proteasome activity, so their use could counter any loss in muscle anabolism resulting from a drop insulin levels. "
If T3 decreases the body's insulin production/secretion then why would taking both insulin and T3 be a bad move?
I would appreciate input from any experts on the subject as I (was) planning on running both of them in my upcoming cycle.
Cheers
