The Midlife Supplement Evidence Map: Every Ingredient We Cover, Graded
What this page is
Every supplement ingredient mentioned anywhere on this site, in one honest reference. Each entry carries the same four-point evidence grade we use everywhere (Moderate — several human trials agree · Mixed — trials disagree · Limited — small or early studies · Low — little relevant human data), with the key study or authoritative source linked so you can check us. No products are sold on this page. Our grading method lives in our Editorial Standards; where we do recommend products, the relevant buying guide is linked under each table.
Bookmark it, argue with it, send it to the friend who just bought something from an ad. We update grades when the evidence moves — the date above is real.
Menopause & hormones
| Ingredient | Claimed for | Evidence grade | Key evidence | Worth knowing |
|---|---|---|---|---|
| Soy isoflavones | Hot flushes | Moderate | Taku 2012 meta-analysis | ~20% fewer, ~26% milder flushes vs placebo; food sources work |
| Ashwagandha | Stress, sleep, “cortisol” | Moderate (stress/sleep) | NIH ODS review | Best-supported adaptogen; interacts with thyroid meds & sedatives |
| Black cohosh | Hot flushes | Mixed | NIH ODS fact sheet | Trials genuinely split; rare liver reactions reported |
| Sage | Hot flushes | Limited | Small positive trials | Promising, needs bigger studies |
| Red clover | Hot flushes | Mixed | Isoflavone trials vary | Same family as soy, weaker record |
| Chasteberry (vitex) | “Hormone balance” | Low (for menopause) | Evidence sits in PMS, not menopause | Often sold to the wrong life stage |
| Rhodiola / schisandra | Fatigue | Limited | Early human data | Traditional adaptogens, thin trials |
Product context: which supplement types are worth it · the branded products compared. The most effective treatment for severe symptoms remains prescription MHT — a doctor conversation, not a shelf decision.
Sleep & calm
| Ingredient | Claimed for | Evidence grade | Key evidence | Worth knowing |
|---|---|---|---|---|
| Magnesium (glycinate) | Sleep quality | Moderate (if intake low) | Abbasi 2012 RCT · 2021 meta-analysis | Modest, real; glycinate form kindest on digestion |
| Glycine | Time-to-sleep | Limited | Small positive trials | Cheap; often paired with magnesium |
| L-theanine | Calm without sedation | Limited-to-moderate | Consistent small studies | Good caffeine-smoother; not a sleeping pill |
| Melatonin | Insomnia | Low-to-mixed (for midlife insomnia) | NHS guidance | Minutes not hours; best evidence is jet lag; availability varies worldwide |
| Valerian | Sleep | Mixed | Reviews inconclusive | Quality varies wildly between products |
Product context: our sleep aids guide — where CBT-I, not any capsule, holds first place.
Joints & mobility
| Ingredient | Claimed for | Evidence grade | Key evidence | Worth knowing |
|---|---|---|---|---|
| Boswellia serrata | Osteoarthritis discomfort | Moderate | Repeated positive trials | One of the better botanicals here |
| Ginger | OA pain | Moderate | Meta-analyses: small real effect | Food doses help too |
| Oral hyaluronan | Joint comfort | Limited-to-moderate | Small trials incl. branded complexes | The Joint Genesis centrepiece |
| Glucosamine ± chondroitin | OA pain | Mixed | Large trials mostly null; some responders | Safe; 3-month personal trial or skip |
| French maritime pine bark | Joint comfort | Limited | Early positive studies | Watch this space |
| Collagen peptides | Joint comfort | Limited (joints) | Zdzieblik 2015 + training | Works with strength work, not instead |
Product context: the joint pain guide — movement outranks every row above.
Metabolism & weight
| Ingredient | Claimed for | Evidence grade | Key evidence | Worth knowing |
|---|---|---|---|---|
| Protein powder | Muscle, satiety | Strong (as food) | PROT-AGE consensus | Not really a supplement — a convenient food |
| Psyllium fibre | Post-meal glucose, LDL | Moderate | Reynolds 2019 Lancet (fibre) | The cheapest evidence-backed buy on this page |
| Green tea catechins | Fat oxidation | Moderate but small | Multiple trials; grams-scale effects | An assist, never a strategy |
| Chlorogenic acid (green coffee) | Glucose, fat metabolism | Limited-to-moderate | Modest trial effects | Java Burn’s core |
| Chromium | Glucose | Mixed | NIH ODS fact sheet | Decades of split results |
| L-carnitine | Weight | Mixed | Meta-analyses: sub-kilogram effects | Mostly for the label |
| “Fat burners” as a category | Weight loss | Low | — | If the ad promises dress sizes, close the tab |
Product context: the metabolism guide — protein, strength and sleep do the heavy lifting.
Blood sugar
| Ingredient | Claimed for | Evidence grade | Key evidence | Worth knowing |
|---|---|---|---|---|
| Maqui berry (delphinidin) | Post-meal glucose | Limited | Small human studies | GlucoBerry’s centrepiece; promising, early |
| Gymnema sylvestre | Glucose | Limited-to-moderate | Small supportive trials | Traditional herb with some backing |
| Cinnamon | Glucose | Mixed | Reviews inconclusive | Enjoy it as food |
| Berberine | Glucose | Moderate — with cautions | Multiple trials | Interacts with many medications; doctor first |
| Biotin | Glucose | Low | Little relevant data | Also skews thyroid blood tests — tell your doctor |
Product context: the blood sugar guide. On medication? Nothing here without your doctor — interactions are real.
Healthy ageing, bones & skin
| Ingredient | Claimed for | Evidence grade | Key evidence | Worth knowing |
|---|---|---|---|---|
| Collagen peptides | Skin elasticity | Moderate (skin) | Proksch 2014 RCT | 8–12 weeks, 2.5–10g; effects fade if you stop |
| Vitamin D | Bone (if low) | Strong for deficiency; null beyond | VITAL trial · ODS | Correcting low levels matters; megadosing does not |
| Calcium | Bone | Strong via food | NIH ODS fact sheet | Food first; supplements only to fill a counted gap |
| Omega-3 (fish oil) | Heart, joints | Mixed (supplements) | NIH ODS fact sheet | Eating fish twice weekly has the better record |
| Vitamin C | Collagen synthesis, immunity | Strong for its real jobs | NIH ODS fact sheet | Deficiency is the enemy; megadoses just make expensive urine |
| Turmeric / curcumin | Inflammation, joints | Mixed | Absorption is the problem | Formulation matters more than dose |
Product context: the collagen guide · what protects skin and bone more than any row here: strength training, protein, sunscreen, sleep.
How to use this page
Three rules keep supplement money sane. First, nothing above beats the basics — any capsule’s best-case effect is smaller than what protein, strength work, walking, sleep and the Mediterranean pattern deliver. Second, trial one thing at a time for 8–12 weeks with a written symptom note, then keep it or refund it. Third, medication means a conversation — the interactions flagged above are the ones we know about; your pharmacist knows the rest.
Fit and Healthy Being shares general wellbeing information, not medical advice. Grades reflect published human evidence as of the date above and change when the evidence does — see Our Sources for what we count as evidence.
