Evidence-Based Supplement & Herb Guides

Reverse T3 Explained: When People Test It and What It Can (and Can’t) Tell You

Reverse T3 is a real thyroid marker, but its routine use is limited. Learn when people test reverse T3, what a high result may mean, and what it can and cannot tell you about thyroid symptoms and treatment.

Reverse T3 has become one of the most misunderstood thyroid markers online. It is often described as the missing clue behind fatigue, weight gain,...

Saffron for PMS and Mood: Benefits, Dosage, and Who Should Avoid It

Saffron for PMS and mood may help with cyclical irritability, low mood, and cramps in some people. Learn the evidence, dosage, timing, side effects, and who should avoid it.

PMS is often described as a few difficult days before a period, but for many people it is far more disruptive than that. Irritability...

Saliva Hormone Testing: When It’s Useful and When It’s Not

Saliva hormone testing can be useful for selected cortisol questions, but it often misleads when used for broad hormone imbalance claims, menopause dosing, or single-sample sex hormone decisions.

Saliva hormone testing has obvious appeal. It is simple, noninvasive, and often marketed as a more “natural” way to understand symptoms like fatigue, weight...

Seed Cycling: Does It Help Hormones, PMS, and Cycle Regularity?

Seed cycling may support PMS and cycle awareness for some people, but the evidence is still limited. Learn what it is, how it may work, what the research actually shows, and when to look beyond the trend.

Seed cycling has become one of the most shared food-based ideas in hormone health. The promise is appealing: rotate flax, pumpkin, sesame, and sunflower...

Seed Oils and Hormones: Omega-6 Debate, Inflammation Claims, and Practical Choices

A clear, evidence-based guide to seed oils and hormones: learn what omega-6 fats really do, whether seed oils raise inflammation, how they affect hormone health, and which practical oil choices make sense.

Few nutrition topics now provoke as much suspicion as seed oils. For some people, they are the quiet cause behind inflammation, weight gain, hormonal...

Selenium for Thyroid Health: Who Benefits, Foods, and Supplement Safety

Learn who may benefit from selenium for thyroid health, which foods provide it, how much you need, and how to use supplements safely without overdoing it.

Selenium is one of those nutrients that attracts a lot of attention in thyroid care because it truly does matter, yet it is also...

SHBG Explained: Why “Normal Testosterone” Can Still Feel Low

SHBG affects how much testosterone is actually available to your tissues. Learn why normal total testosterone can still feel low, what raises or lowers SHBG, how to test it properly, and what to do next.

A lab report can be technically normal and still fail to explain why you feel unlike yourself. That disconnect is one reason sex hormone-binding...

Shilajit for Testosterone: What It Does, Purity Concerns, and Safety

Shilajit for testosterone may offer modest benefits with purified extracts, but purity, heavy metal testing, and proper hormone evaluation matter. Learn what the studies show, who may benefit, and how to use it more safely.

Shilajit has become one of the most talked-about “natural testosterone” supplements online, usually sold with bold promises about energy, libido, strength, and male vitality....

Soy and Thyroid: Is It Safe with Hypothyroidism and Levothyroxine Timing?

Learn whether soy is safe with hypothyroidism, how it may affect levothyroxine absorption, which soy foods need more caution, and the best timing plan to keep TSH stable.

Soy can feel like a nutrition gray zone when you have hypothyroidism. One clinician says it is fine. Another warns you to avoid it....

Soy Isoflavones for Hot Flashes: Benefits, Dosage, and Who Should Avoid Them

Learn how soy isoflavones may help hot flashes, what dose range is commonly used, how long to try them, key safety concerns, and who should avoid supplements or seek medical advice first.

Hot flashes can make menopause feel less like a phase and more like a daily interruption. One minute you are fine, and the next...

Spearmint Tea for PCOS: Testosterone, Acne, and How Much to Drink

Spearmint tea for PCOS may modestly lower testosterone-related symptoms like acne and facial hair. Learn what the research shows, how much to drink, and when tea is not enough.

Polycystic ovary syndrome often leaves people juggling symptoms that feel connected but do not always improve together: breakouts along the jawline, increased facial hair,...

Spotting Between Periods: Common Causes and When to Worry

Learn what spotting between periods can mean, which causes are most common, when bleeding may be harmless, and when it is time to seek medical evaluation.

Spotting between periods can be unsettling because it sits in an uncomfortable middle ground: too little to feel like a full period, but unusual...

Stopping Birth Control: What Symptoms to Expect and How Long It Takes

Stopping birth control can bring irregular bleeding, acne, cramps, mood changes, and quick return of fertility. Learn what symptoms to expect, how long periods and ovulation may take to return, and when to get medical advice.

Stopping birth control often sounds simpler than it feels. For some people, the transition is barely noticeable. For others, it is the moment old...

Subclinical Hyperthyroidism: Risks, Symptoms, and Monitoring

Learn what subclinical hyperthyroidism means, which risks matter most, when symptoms show up, and how monitoring and treatment decisions are usually made.

A low TSH result can be unsettling, especially when the rest of the thyroid panel looks “normal” and you are not sure whether you...

Subclinical Hypothyroidism: When TSH Is High but Symptoms Matter

Understand subclinical hypothyroidism, what a high TSH with normal free T4 really means, when symptoms matter, who may benefit from treatment, and when repeat testing or specialist care is the smarter next step.

Subclinical hypothyroidism is one of those diagnoses that can sound both reassuring and unsettling at the same time. The lab pattern looks mild: thyroid-stimulating...

Sugar Cravings Before Your Period: Hormones, Blood Sugar, and Practical Fixes

Why sugar cravings spike before your period, how hormones and blood sugar affect appetite, and the practical food, supplement, and medical strategies that can help you feel more in control.

A few days before your period, it can feel as if your appetite changes personality. Foods you normally enjoy may suddenly seem uninteresting, while...