@emanuele, thats a good update. Its good to see that you’re tracking things and also tuning in on how your body is feeling / responding.
You may want to check this new video, just released by Matt Kaeberlien one day ago (# The Effects of Rapamycin on APOE4 Carriers & Brain Function) https://www.youtube.com/watch?v=b76K5PU3rfE
On LDL, 100-180 mg/dL is like the population average I suppose. Most people will be in that range, in the absense of lipid lowering drugs. If you’re in the camp that believes that lower the better, then a combination of drugs will be necessary. Ezetimibe alone will not move the needle much. Psyllium husk, berberine, fish oil, exercise, garlic, etc will not move the needle much either. Yes, Bempedoic Acid + Ezetimibe would be a good experiement. In my case, normal hovers around 100-120. With Rosovastatin 5mg alone, I get it down to 75. With Bempedoic acid + Ezetimibe, I get it down to 75. With all 3 together, I get it down to under 50. Thats just me (not everyone responds the same way). Many people on this forum source drugs from India (very inexpensive generic drugs, and relatively good quality profile, depending on the brand/source). If you can get your hands on PCSK9i, that can also be a good 2-week experiment.
Ok, if you intend to drop HBA1C from 5.5 down to 5, then adding metformin makes sense. High level of consistent activity should also bring down HBA1C, however, in your case, it looks like you’re at the maximum threshold of exercise already. In addition, although new research shows that Intermittent Fasting does not provide any additional benefit beyond that of caloric restriction, in my case it does seem to provide additional benefit (which is reduction of Fasting Insulin), especially if you’re doing early TRE (Time Restricted Eating). Another note is that since HBA1C & Fasting Glucose are not perfect markers, you can consider testing for Fasting Insulin as well (Homa-IR appears to be a better indicator of glucose homeostatis, compared to fasting glucose alone). Mario Kratz (https://www.youtube.com/@nourishedbyscience) is a fantastic unbiased resource on all things related to glucose homeostatis / insulin sensitivity. Highly recommend watching / reading his content.
On Methylation, Chris Masterjohn PHD is the best resource, he goes into great detail. My homocysteine has been consistent around 5. Note that not everyone does well on mega-dosing methyl-folate. Likewise, too much TMG (beyond 4mg/day) appears to increase LDL. You normally find a combination of methyl donors, i.e. methylated B-vitamins + TMG on the market. B2 + B6 + MethylFolate + MethylCobalamin + TMG. Its good to experiment the dosage that you feel better (i.e. achieving lower homocysteine, without getting side effects like anxiety or brain fog from mega-dosing). Another/parallel strategy is to provide the body with the output of methylation, i.e. creatine and phosphatidyl choline, these two are the major end products of methylation. So, the theory is that if you supplement the body with these, then your methylation (MTHFR gene) doesn’t need to work as hard. Lastly, on some days when i’m consuming liver or fish roe or several egg yolks, I don’t bother to take methyl support supplements, because I know I’m getting enough from food. One final note: heavy exercise (which you appear to do) can also deplete methyl donors.
On Urolithin A, SiimLand has done some research (https://www.youtube.com/watch?v=CP2BFwUV6-I). In your case, I suspect that you’re getting a bulk of the benefits (mitophagy, mitochondrial biogenesis & other adaptations) from your exercise regimen, rather than Urolithin A alone, but I could be completely wrong.