Spearmint herbal tea has significant anti-androgen effects in polycystic ovarian syndrome. A randomized controlled trial.
http://www.ncbi.nlm.nih.gov/pubmed/19585478

Forty two volunteers were randomized to take spearmint tea twice a day for a 1 month period and compared with a placebo herbal tea. At 0, 15 and 30 days of the study serum androgen hormone levels and gonadotrophins were checked, the degree of hirsutism was clinically rated using the Ferriman-Galwey score and a questionnaire (the modified DQLI = Dermatology Quality of Life Index) was used to assess improvements in the level of self-reported hirsutism. Forty one of 42 patients completed the study. Free and total testosterone levels were significantly reduced over the 30 day period in the spearmint tea group (p < 0.05). LH and FSH also increased (p < 0.05).

The effect of Mentha spicata Labiatae on uterine tissue in rats
http://tih.sagepub.com/content/22/8/343.abstract

Twenty female Wistar albino rats weighing 160±10 g were used for this study. Rats were divided into two groups of ten animals: group I received no herbal tea (control group) and group II received 20 g/L M. spicata tea. Control group rats were given commercial drinking water (Hayat DANONESA water). Herbal tea was prepared daily and provided at all times to the rats over 30 days as drinking water. Plasma malondialdehyde (MDA) levels were determined. In addition, uterine tissues were submitted for histopathologic examination. MDA levels were increased in group II when compared with the control group. The difference between group II and the control group was statistically significant (P < 0.01). In the M. spicata Labiatae-treated group, histopathological changes like apoptosis and diffuse eosinophil leucocyte infiltration in surface and stromal glandular epithelium were observed in both endometrium and endocervix. It was concluded that lipid peroxidation and uterine damage occurs after M. spicata administration in rat uterus.

Effects of peppermint teas on plasma testosterone, follicle-stimulating hormone, and luteinizing hormone levels and testicular tissue in rats
http://www.goldjournal.net/article/S0090-4295%2804%2900418-2/abstract

The experimental study included 48 male Wistar albino rats (body weight 200 to 250 g). The rats were randomized into four groups of 12 rats each. The control group was given commercial drinking water, and the experimental groups were given 20 g/L M. piperita tea, 20 g/L M. spicata tea, or 40 g/L M. spicata tea. The follicle-stimulating hormone and luteinizing hormone levels had increased and total testosterone levels had decreased in the experimental groups compared with the control group; the differences were statistically significant. Also, the Johnsen testicular biopsy scores were significantly different statistically between the experimental groups and the control group. Although the mean seminiferous tubular diameter of the experimental groups was relatively greater than in the control group, the difference was not statistically significant. The only effects of M. piperita on testicular tissue was segmental maturation arrest in the seminiferous tubules; however, the effects of M. spicata extended from maturation arrest to diffuse germ cell aplasia in relation to the dose.

Cooked-palaeo does NOT consist of sashimi, as cooked-palaeos routinely praise cooking and warn against the so-called "dangers" of eating raw meats,  and many cooked-palaeos argue  vehemently against fruits/veg  , even raw ones, such as the Zero-carb crowd and the low-carb crowd. And plenty cooked-palaeo gurus do not recommend rare meats but say cooking is fine as long as you don't burn the stuff till it's charcoal.

As for your above example, it is completely biased and unscientific. First of all, it should involve a totally  random number of people in a population, not just "those who seem visibly OK on cooked diets"(!). I can already see what would happen on such an experiment, anyway, given multiple reports online from many forums focusing on different diets:- the 100 percent raw vegans would quickly get far more initial health-benefits than the others, simply because they were not eating cooked-foods and therefore not taking in any heat-created toxins from cooked foods, some would then be slowly deteriorating in health, between a few months to a few years, with others staying healthy beyond the 5-year limit, though likely not for the rest of their lives. The SAD-eaters going cooked-palaeo would experience minor improvements re slight decreases in the rate/severity of auto-immune disorders and the like, but would otherwise be no better off than other SAD-eaters, as they would be continuing to take in heat-created toxins from cooked foods - and with a minority like me, suffering greatly in health. Of course, if any people in those 2 groups cheated, such as cooked-palaeos incorporating far more raw plant-foods in their diet or raw vegans incorporating a little cooked animal foods in their diet, those would be even better off than the original 2 groups.

Isn't sashimi a lot cheaper in Japan than elsewhere? You really should up the raw intake as much as possible.

1 caution:- dairy, even raw dairy, is often very injurious to the teeth and the bones.