Issue #16

Researchers at Maastricht University conducted a PRISMA-compliant systematic review of 21 interventional studies examining how alternating heat and cold exposure affects cardiovascular and metabolic health outcomes. The review synthesized acute and chronic effects of contrast therapy, converting continuous outcomes to standardized mean differences to enable cross-study comparison.

Published in Molecular Psychiatry, this review examines the biological mechanisms and current evidence base for cold exposure as a mental health intervention, assessing whether it meets the threshold for a viable lifestyle therapy. The paper evaluates neurochemical pathways including norepinephrine and mood-related markers alongside the quality of existing clinical evidence.

This piece breaks down the vascular mechanics behind contrast therapy and provides practical guidance on sequencing heat and cold sessions, including timing, number of cycles, and placement within a training week. It draws on published meta-analyses to contextualize the evidence while addressing how variables like session order affect physiological and subjective outcomes.

A Washington, D.C.-based family lumber business that relies heavily on Canadian Western red cedar describes how U.S. tariffs are raising costs and making inventory planning significantly more difficult for small importers. The business owner, whose company supplies cedar for exterior applications including decking and siding, is urging the administration to end the duties.

The National Lumber and Building Material Dealers Association has sent a letter to congressional leaders calling for targeted relief and greater policy predictability following new tariffs on Canadian plywood, engineered wood products, and other construction materials. An NLBMDA member survey found 80 percent of respondents reporting sourcing or availability impacts, with 87 percent citing challenges finding domestic substitutes.

Four in five American lumber dealers surveyed by the NLBMDA report supply disruptions since a 50 percent duty on Canadian building materials took effect in late August, with laminated veneer lumber cited as a product for which domestic production cannot readily substitute. The association has warned congressional leaders of potential LVL shortages and formally requested relief on materials American mills cannot cover.

The NAHB reports that framing lumber reached $524.55 per thousand board feet on September 11, up 8.8 percent year over year, with futures also trending higher on an annual basis. The update also notes that combined antidumping and countervailing duty rates on Canadian softwood have been revised downward to 25.9 percent, though a 10 percent Section 232 tariff keeps the effective rate on Canadian imports at 35.9 percent.

Madison's Lumber Prices Index fell 2 percent week over week to US$514 per thousand board feet for the week ending September 18, 2026, down from $525 the prior week and $521 one month earlier. The index tracks a weighted mix of Western Spruce-Pine-Fir, Eastern Spruce-Pine-Fir, Douglas fir, and Hem-Fir based on North American production volume ratios.

While benchmark softwood lumber prices have stabilized above 2024 and 2025 levels due to sawmill closures and reduced imports, record diesel prices are severely compressing logging margins further up the supply chain. The piece warns that the fuel cost crisis upstream threatens the logging industry's ability to supply sawmills even as surface lumber prices appear steady.

An analysis by Global Wood Markets Info identifies more than 20 U.S. sawmill projects that have added production capacity or increased operating rates since early 2025, contrasting sharply with large permanent closures concentrated in Canada. The report describes a structural divergence in which Canadian capacity is shrinking while capital flows into larger, more productive mills across the U.S. South.

This September 2026 guide explains how Section 232 national security tariffs currently apply to steel, aluminum, copper, softwood lumber, wood furniture, and dozens of derivative products, including a 25 percent duty on the full invoice value of metal-content articles above a weight threshold. It provides practical guidance for importers and hardware brands on calculating landed cost exposure across affected product categories.

Diesel prices surged to $6.26 per gallon in the week of September 16, a 33-cent single-week jump representing a 68 percent year-over-year increase, according to FreightWaves' daily diesel index. The freight market is simultaneously showing its first year-over-year volume growth in 42 months, creating a bifurcated environment of rising demand and sharply elevated operating costs heading into peak season.

The EIA national on-highway diesel average rose to $5.967 per gallon for the week of September 7, 2026, a 36.8-cent weekly jump that is poised to flow rapidly into fuel surcharges across U.S. truckload, LTL, and industrial freight. The analysis notes that published surcharge schedules from major carriers automatically step up at diesel levels near or above $6, increasing all-in freight invoice costs even when base linehaul rates remain stable.

This guide details the everyday role of sauna in Finnish life, from its presence in homes, workplaces, and government buildings to the step-by-step customs of a traditional session, including löyly, cooling methods, and unwritten social rules. It also covers UNESCO's 2020 recognition of Finnish sauna culture as Intangible Cultural Heritage of Humanity and provides venue recommendations in Helsinki, Tampere, and Lapland.

Following a sold-out debut, the Toronto Sauna Festival is returning to Evergreen Brick Works with more than 20 saunas, international sauna masters, Aufguss rituals, and a footprint three times larger than its first edition. The multi-day event brings together practitioners from Canada and Europe alongside movement classes and expanded wellness programming.

The Seattle Sauna Festival returns to the National Nordic Museum in Ballard on November 7–8 for its second year, featuring mobile saunas from across the Pacific Northwest alongside cold plunge stations and campfire gatherings. The event connects participants to the region's Scandinavian sauna heritage, including the century-old Wierlo sauna preserved in the museum's East Garden.

Vanity Fair profiles the Aufguss World Championships, a competitive sauna ritual event in which practitioners choreograph towel-waving performances to distribute waves of scented steam through a packed sauna room, with American competitors emerging as serious international contenders. The piece follows Las Vegas-based performers as they prepare a new routine for competition at a resort venue, documenting the growing global profile of the discipline.

The article examines Germany's textile-free mixed sauna culture through the lens of first-time American visitors, documenting the cultural norms, etiquette, and social expectations that define the German spa experience. It explores the contrast between German and American attitudes toward communal nudity in wellness settings and offers practical context for visitors approaching the tradition for the first time.