I think all of us here would like to avoid cognitive decline. Probably the most feared condition.

Article in Nature

The article above is an association article, but probably valid. There can be the argument that the population with high riboflavin diets probably tend to do more healthy things - but looking at sources of riboflavin, a lot of it is from things I’d consider unhealth generally.

The study looked at Riboflavin intake vs. Cognitive testing on 2893 individuals over age 60 years. The confidence interval on all 3 tests, and in combination seems to favor higher Riboflavin intake.

Vegetable/Fungi Sources:
Fortified Tofu
Mushrooms
Spinach
Almonds
Avocados

Meat/Animal Sources:
Beef-Steak
Low fat milk
Non-fat yogurt
Cottage cheese
Pork Chops
Salmon
Eggs

The details on amounts of Riboflavin per serving is available here

It would seem pretty sensible to make sure this is adequately represented in your diet.

As an aside, it really hasn’t been on my list of things I recommend for decreasing homocysteine, but I saw another post on the forum regarding this, and Vera-Health.ai seems to agree that it can decrease homocysteine. The text below is their summary on that topic:

That post was from @Dr.Bart
BTW, Tommy Woods also recommended Riboflavin for homocysteine on one of his podcasts

Riboflavin, or vitamin B2, can indeed decrease homocysteine levels, particularly in individuals with specific genetic backgrounds. The relationship between riboflavin and homocysteine is significantly influenced by the methylenetetrahydrofolate reductase (MTHFR) C677T polymorphism. Individuals with the MTHFR 677TT genotype often have elevated homocysteine levels due to reduced enzyme activity, which is dependent on riboflavin as a cofactor.

Research indicates that riboflavin supplementation can lead to a significant reduction in homocysteine levels in these individuals. For instance, a study demonstrated a 22% reduction in homocysteine levels with riboflavin supplementation in subjects with the MTHFR 677TT genotype, especially those with low baseline riboflavin status. The effect of riboflavin is further modulated by folate status. In individuals with low folate levels, riboflavin can have a more pronounced effect on reducing homocysteine concentrations. This is because riboflavin acts as a cofactor for MTHFR, which is crucial for converting homocysteine to methionine, a process that also requires folate.

However, the impact of riboflavin on homocysteine levels in the general population or those without the MTHFR 677TT genotype is less clear. Some studies suggest that riboflavin alone may not significantly lower homocysteine levels unless combined with folate supplementation. In populations with adequate riboflavin and folate status, the effect of riboflavin on homocysteine might be minimal.

In summary, riboflavin can decrease homocysteine levels, particularly in individuals with the MTHFR 677TT genotype and low folate status. Its efficacy in the general population without these specific genetic and nutritional factors is not well-established.

15 Likes

Agreed, absolutely. Many thanks for this info @DrFraser

1 Like

Pretty sure it’s Chris Masterjohn that said to take riboflavin 5 phosphate for the MTHFR. And my Homocystex contains 25mg riboflavin 5 phosphate. I’m too tired to look up the article, but this is the form that bypasses something to make it work if you have MTHFR.

3 Likes

From ChatGPT. It seems there are many healthy sources of B2.

Here’s a list of 25 foods that are among the highest in riboflavin (vitamin B2) content per gram:

  1. Beef liver

  2. Lamb liver

  3. Pork liver

  4. Chicken liver

  5. Kidney (beef or lamb)

  6. Mackerel

  7. Salmon

  8. Trout

  9. Sardines

  10. Milk

  11. Yogurt

  12. Cheddar cheese

  13. Parmesan cheese

  14. Eggs (especially egg whites)

  15. Almonds

  16. Sunflower seeds

  17. Wheat bran

  18. Fortified cereals

  19. Soybeans

  20. Spinach

  21. Kale

  22. Mushrooms (especially crimini and shiitake)

  23. Asparagus

  24. Broccoli

  25. Tempeh

1 Like

Or you can take a daily B complex vitamin.

Riboflavin’s potential protective effect in Parkinson’s disease has been discussed here: Parkinson's disease - #383 by adssx

For dementia, there’s this Japanese paper: Dietary intake of folate, vitamin B6, vitamin B12, and riboflavin and the risk of incident dementia 2024 (:warning: Preprint :warning: )

Over a median follow-up of 15.4 years, 887 cases of disabling dementia were identified. Riboflavin intake was inversely associated with risk of disabling dementia among men and women; comparing the highest and lowest quartiles, multivariable hazard ratios and 95% CIs were 0.55 (95% CI 0.39–0.78; P for trend < 0.001) in men and 0.51 (0.39–0.68; P for trend < 0.001) in women. A similar inverse association was observed for vitamin B12 intake among men, and folate intake among women, with multivariable hazard ratios and 95% CIs of 0.69 (0.49–0.98; P for trend = 0.04) and 0.66 (0.49–0.88; P for trend = 0.0008), respectively.
Our findings suggest that dietary intake of B-vitamins, especially riboflavin, is associated with a reduced risk of disabling dementia in Japanese individuals.

3 Likes

My last blog was actually on this topic. I need to get the one on GLP1’s and neurocognitive decline done … continues to be a good stream of data on that.
Thanks for that article - I’ve added it to the blog!

1 Like

You can also add these recent articles (as usual, association, not causality):

Association between dietary riboflavin intake and cognitive decline in older adults: a cross-sectional analysis 2024

The study also found an L-shaped association between riboflavin intake and cognitive decline, with an inflection point at approximately 2.984 mg/d.
Our cross-sectional study in a nationwide sample of American old adults suggests that dietary riboflavin intake was negative associated with cognitive decline.

Dietary riboflavin intake in relation to psychological disorders in Iranian adults: an observational study 2023

After considering potential confounders, adults in the top energy-adjusted quartile of riboflavin intake, compared to the bottom quartile, had decreased odds of depression (OR = 0.66; 95%CI 0.49, 0.88), anxiety (OR = 0.64; 95%CI 0.44, 0.94) and high psychological distress (OR = 0.65; 95%CI 0.48, 0.89).

Associations of dietary B vitamins intakes with depression in adults 2021

Compared to the lowest quartile of dietary intake, the ORs (95%CIs) of the highest quartile were 0.64 (0.50–0.82), 0.78 (0.62–0.97), 0.60 (0.47–0.78), 0.65 (0.50–0.84), and 0.71 (0.54–0.95) for vitamin B1, vitamin B2, niacin, vitamin B6, and vitamin B12, respectively.

1 Like